Best Metalworking Multipurpose Drill Bits Deals of Oct 2026

Updated October 28, 2026Our site contains affiliate links for which we may be compensated.
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Bosch

BOSCH CO14B 14-Piece Cobalt Drill Bit Set With Case | Drill Bit Sets, Metalworking Tools, Bosch CO14B Twist Drill Bit Set, Drill Bits, Cobalt Drill Bits, cast iron

Enhanced M42 Alloy Material: These drill bits for metal contain an 8% cobalt alloy that delivers 10x life vs. Standard bits
Cobalt M42 Drill Bit: Provides upgraded M42 cobalt drill bits, jobber-length bits designed for durability, high heat resistance and Hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum
Surface-hardened Tip: The Cobalt drill bits for hardened steel penetrate tough, abrasive materials
High-heat Resistant Bits: This drill bit set for metal withstands high-temperature applications for extended periods of time
Thick Web-helix Design: The BOSCH drill bit set features a thick web-helix design that provides additional stability in tough applications
Includes: A versatile drill bit for metal assortment featuring 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8", and 1/2" sizes
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Sabre Tools 29-Piece Cobalt Drill Bit Set Heavy-Duty Drill Bits for Steel, Hard Metal, Cast Iron (29pcs)

Set Includes: 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, 1/4, 17/64, 9/32, 19/64, 5/16, 21/64, 11/32, 23/64, 3/8, 25/64, 13/32, 27/64, 7/16, 29/64, 15/32, 31/64 and 1/2 inch Cobalt drill bits
Compatible with drills and drill presses
Heavy-Duty Material: Our drill bits for hardened steel feature a heavy-duty construction made with M35 cobalt, (5% Cobalt) which has excellent durability and superior resistance against abrasion and high heat.
Pilot Point Tip: These cobalt drill bits feature a pilot point tip that prevents slipping and can help increase drilling speed while ensuring smooth and easy penetration through hard metals.
Wide Range of Applications: Our cobalt drill bits for hardened steel are suitable for hard metals, stainless steel, cast iron, steel, titanium alloy, hard plastics and more, and a wide range of applications such as repair, construction, or woodworking.
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Diablo Metal Demon Drill Bit Set - 1/16" - 3/8" Size Range, 15-Piece | Mild, Hardened and Stainless Steels, Assortment for Metalworking, Fabrication, and General Jobsite Drilling - DMD-S15T

Versatile Application - Effortlessly drill through mild steel, hardened steel, stainless steel, wood, and plastic with a single bit.
Precision Starts - The 130-degree hybrid split point tip ensures fast, accurate starts without the need for pre-drilling.
Heat Resistance - Thermal Shield Protective Coating protects the bit from heat buildup, enhancing performance and longevity.
Efficient Debris Removal - Optimized flute design swiftly clears metal shavings, keeping the bit cooler and maintaining cutting efficiency.
The Diablo Metal Demon Drill Bit Set (DMD-S15T) offers a comprehensive selection of 15 high-performance bits, designed for a wide range of materials with exceptional durability and precision. Each bit features a 3-flat shank to prevent slippage and ensure optimal torque transmission during use. The set includes sizes ranging from 1/16-inch to 3/8-inch, providing versatility for various drilling tasks. Whether you are working with metal, wood, or plastic, this set delivers reliable performance, making it an essential addition to any toolkit.
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8 Pack Titanium Coated HSS Twist Drill Bits, 3-10mm Serrated Side Cutting Drill Bit, Hex Shank Serrated Cutting Drill Bits, Drill Bit Woodworking Tools, Hole Holesaw Tool for Plastic Metal Wood Hole

Package Details: This set contains 8 titanium-coated high-speed steel metal drill bits, covering the most commonly used sizes: 3mm, 4mm, 5mm, 6mm, 6.5mm, 7mm, 8mm and 10mm. These hexagonal shank drill bits are designed to fit most electric drills on the market, ensuring you have the right size for every task
Reliable Materials: These metal drill bits are made of high-speed steel and coated with a durable titanium coating, providing superior sharpness and durability. The titanium coating ensures that the drill edge remains sharper longer, extending the life of standard drill bits by 2 times
Exquisite Design: With a fully ground spiral flute design, these metal cutting drill bit accessories minimize friction and heat for cooler and faster drilling. The straight shank design prevents the drill from deflecting, ensuring precise and fast starting and improving drilling efficiency
Powerful Functionality: The sharp center serrations of these side-cutting drill bits significantly improve chip discharge and increase overall drilling efficiency. Whether you are dealing with wood, metal, plastic or drywall, this design makes the drilling process smoother and faster
Wide Application: These versatile titanium drill bits are suitable for a variety of materials, including sheet metal, wood, aluminum alloy, plastic and drywall. Whether it is grooving, drilling or cutting, this set of tools is ideal for any of your projects
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gENERIC

6pcs High-Speed Steel Metalworking Set, M35 Cobalt Twist Drill Bit Set | 135°Gold Finish, Upgraded Serrated Side Cutting Drill Bit for Drilling Screwing Boring Carving Cutting Polishing (3-8MM)

[HIGH-SPEED​STEEL DRILL BIT SET] : This high-speed steel drill bit set features a titanium-coated surface, enhancing hardness and wear resistance to ensure lasting sharpness. Ideal for drilling wood, plastic, aluminum, and thin metal sheets
[TITANIUM-COATED DRILL BITS] : The 135° split-tip straight shank design prevents drill bit deviation, and the sharp cutting edge makes drilling faster and more efficient. Improved positioning accuracy makes drilling smoother and easier to control. An ideal addition to your drill bit collection
[MULTI-FUNCTIONAL TWIST DRILL SET] : This multi-functional drill set is suitable for drilling, boring, carving, and grooving in wood. It is also suitable for plastics, aluminum, and thin metals. A reliable choice for any workshop
[SUITABLE FOR MULTIPLE MATERIALS] : This metalworking tool set includes six sizes (3mm, 4mm, 5mm, 6mm, 6.5mm, and 8mm) to meet various processing needs. Ideal for DIY enthusiasts and professionals alike
[STRAIGHT SHANK DESIGN, HIGH COMPATIBILITY] : The round straight shank design is suitable for a variety of materials. Compatible with most corded and cordless drills, bench drills, and rotary tools that can use straight shank drill bits, making it convenient for home, garage, and workshop use
[PREMIUM MATERIALS] : Made from carefully selected premium materials for durability. The sharp serrated edge design allows for continued horizontal drilling after the initial hole. The round shank is suitable for both electric drills and bench drills, providing a secure and non-slip grip. Constructed from durable high-speed steel with a precision-ground cutting edge, it's suitable for everyday drilling tasks
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6 Pack Titanium Coated HSS Twist Drill Bits, 3-8mm Hex Shank Serrated Cutting Drill Bit Serrated Grooving Cuttings Carpenter Side Cutting Tap for Metal Wood Plastic Drilling and Cuttings

Package Contents: You will receive 6 side cutting drill bit in sizes of 3mm, 4mm, 5mm, 6mm, 6.5mm, and 8mm, comprehensively covering drilling needs from fine to general applications.
High-Speed ​​Steel Material: The serrated side cutting drills bit are made of high-quality high-speed steel (HSS) with a robust titanium coating. This process not only greatly enhances hardness and wear resistance but also ensures a consistently pointed cutting edge, easily performing as a high-performance side cutting drill bit for wood, plastic, and soft metals. If you need reliable side cutting drill bits for metal like aluminum alloys, these serrated drill bits deliver clean, fast results.
Helical Flutes Design: The spiral saw drill bit optimized precision helical flute structure effectively reduces friction and heat buildup, achieving rapid heat dissipation. Simultaneously, the smooth chip removal channel ensures smooth chip removal, resulting in clean, smooth holes and significantly reducing burrs and workpiece breakage.
Straight Shank Design: These titanium twist cutting bits feature a hex shank design for excellent clamping force and operational stability. Designed as heavy-duty side cutting bits and versatile twist drill bits, they prevent slippage, providing excellent clamping force and operational stability, effectively preventing slippage or deflection during startup. Combined with a pointed center locating tip, precise positioning is achieved, ensuring every drill begins accurately and ends efficiently.
Enhanced Workflow: Whether for home DIY, model making, or appliance repair, this multi-size hole drill bit is your indispensable tool. Its efficient chip removal and pointed cutting edge can significantly improve drilling speed and overall work efficiency, making the operation process smoother and less labor-intensive.
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VALYRIANTOOL Cobalt Extra Long Drill Bits Set(5PCS), M35 High Speed Steel Extension Drill Bit, 12" Deep Hole Drilling for Stainless Steel, Plastic and Wood

5PCS 1/8"-3/8" Cobalt Drill Bits: This extra-long drill bit set has 5 standard sizes of 12-inch drill bits that includes: 1/8-inch, 3/16-inch, 1/4-inch, 5/16-inch, and 3/8-inch
M35 Cobalt High Speed Steel: Industry grade M35 high speed steel drill bit set, harder than 4241 HSS used in other similar drill bits set. These drill bits also contain 5% Cobalt, which increases wear-resistance and durability
Fully Ground Process and 135 degree Split Point: Fully ground spiral groove design clears particles quickly, decreases friction and heat for a faster and cooler drilling performance. 135 degree split point with straight shank prevents walking and makes drilling precise and faster. No center punch is needed
Multiple Application: Perfectly suitable for cutting through Hard Metal such as Stainless Steel, Steel, Sheet Metal and Cast Iron as well as Plastic, Aluminum Alloy, Wood and Other Softer Metals. Pay attention to speed, pressure and heat control during drilling
90 Days Warranty: If you are not fully satisfied for any reason, please contact us for 100% refund or replacement
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gENERIC

6pcs High-Speed Steel Metalworking Set, 3-8MM Twist Drill Bit Set, 135°Upgraded Serrated Side, Machinists for Drilling Screwing Boring Carving Cutting Polishing Durable Plunge Drill Bits

This 6-piece titanium-plated high-speed steel metalworking tool kit integrates multiple functions in one set, fully satisfying all kinds of daily metal machining work requirements
Adopting high-speed steel base with titanium plating finish, these bits boast high hardness and outstanding abrasion resistance, tough enough for long-time heavy-duty frequent usage
Versatile multi-purpose design supports drilling, screwing, boring, carving, cutting and polishing, compatible with most metal materials to fulfill comprehensive metalworking tasks
Precisely machined with ultra-sharp cutting edges and steady working performance, delivering fluent, efficient cutting and tidy finished results during metal fabrication
Robust structure equipped with plunge function ensures excellent working stability, a practical pick for professional metal craftsmen as well as DIY hobbyists
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Titanium Coated Twist Drill Bits, 6‑Pack(3‑8mm),For Wood Metal Plastic | Multipurpose Drilling Boring Carving Tool, Fits Most Electric Drills for Drilling Screwing Boring Carving Cutting Polishing

【Premium Hardened Steel & Titanium Coating】Our twist drill bits are built from hardened industrial‑grade steel with long‑wearing titanium finish. The outer coating cuts down friction and heat buildup during heavy‑duty work, retaining steady sharpness for repeated home and workshop drilling tasks
【135° Split‑Point Anti‑Walk Tip】Equipped with upgraded 135° split‑point tip, these drill bits stop wandering at the start of drilling. No extra pilot hole required, helping you drill faster, cleaner, more accurately and boost your overall working efficiency
【Upgraded Serrated Side‑Cutting Function】Beyond basic hole‑drilling, the special serrated side‑edges support horizontal grooving, slotting and slight hole‑enlargement once the initial hole is finished. Great for carving, boring and complex handmade craft projects
【6 Practical Sizes & Multi‑Material Use】This drill kit includes six widely‑used sizes: 3mm, 4mm, 5mm, 6mm, 6.5mm, 8mm. It performs well on solid wood, MDF, plywood, plastic, aluminum and thin iron sheets, perfect for home renovation, woodworking and DIY hobbies
【Universal Straight‑Shank Compatibility】Standard round straight shank fits most corded & cordless power drills, bench drills and rotary tools. This multi‑functional drill accessory is a must‑have for handymen, DIY lovers and workshop professionals
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Side Cutting Drill Bits, 12-Piece HSS Titanium Twist Drill Bit Set | 5 Sizes from 1/8 to 5/16 Inch Titanium-Coated Drill Bit Set with Serrated HSS Bits for Wood and Plastic,

Drill and Cut Sideways to Enlarge Holes — These serrated side cutting drill bits function as a drill saw bit, allowing controlled side cutting after drilling to enlarge existing holes, shape openings, and create simple slots in wood and plastic. Designed for DIY woodworking, repairs, and creative modifications where standard twist drill bits cannot easily modify the shape or size of an opening.
TITANIUM-COATED HSS DRILL BITS — This twist drill bit set combines high-speed steel construction with a titanium coating for wear resistance. Spiral flutes help clear chips during drilling in soft wood, plywood and plastic, supporting everyday woodworking, repairs and craft projects.
Versatile for Woodworking, DIY Projects, and Home Repairs — Whether you are building furniture, repairing PVC pipes, or working on craft projects, these multi-material drill bits handle everyday drilling and hole modification tasks. The 12-piece set covers 5 practical sizes: 2 each of 1/8 inch and 5/16 inch, 1 of 5/32 inch, 3 of 3/16 inch, and 4 of 1/4 inch, so you always have the right size from small drill bits to larger ones for common DIY needs.
Get Optimal Results with the Right Side-Cutting Method — For optimal side-cutting results, drill a starter hole first, then use larger sizes such as 1/4 inch and 5/16 inch. Maintain sufficient drill speed; if your drill stalls when moving sideways, the RPM is too low. Apply light, controlled pressure. Do not use thin bits (1/8 to 3/16 inch) for side cutting as they may snap under lateral force. Optimized for soft wood, plywood, and PVC; not recommended for drywall, hardwood, or metal.
DRILL SAW FUNCTION AND ORGANIZED STORAGE — Use a larger bit as a drill saw bit to modify a starter hole in soft wood or PVC, following the side-cutting guidance above. Round shanks fit compatible adjustable drill chucks, while the included storage case keeps all 12 bits organized for easy selection.
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Our #1 Pick Today
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Bosch

BOSCH CO14B 14-Piece Cobalt Drill Bit Set With Case | Drill Bit Sets, Metalworking Tools, Bosch CO14B Twist Drill Bit Set, Drill Bits, Cobalt Drill Bits, cast iron

Enhanced M42 Alloy Material: These drill bits for metal contain an 8% cobalt alloy that delivers 10x life vs. Standard bits
Cobalt M42 Drill Bit: Provides upgraded M42 cobalt drill bits, jobber-length bits designed for durability, high heat resistance and Hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum
Surface-hardened Tip: The Cobalt drill bits for hardened steel penetrate tough, abrasive materials
High-heat Resistant Bits: This drill bit set for metal withstands high-temperature applications for extended periods of time
Thick Web-helix Design: The BOSCH drill bit set features a thick web-helix design that provides additional stability in tough applications
Includes: A versatile drill bit for metal assortment featuring 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8", and 1/2" sizes
Details & specs
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on Amazon.com
Disclaimer: While we make every effort to ensure accuracy, we cannot guarantee that all product specifications, pricing, discounts, and details are complete or error-free. Because information is subject to change, we recommend verifying all details directly with the retailer prior to making a purchase. As an Amazon Associate, we earn from qualifying purchases.

10 Metalworking Multipurpose Drill Bits deals are available from: Amazon, starting from $6.89.

The biggest discount we found is 10% on BOSCH CO14B 14-Piece Cobalt Drill Bit Set With Case | Drill Bit Sets, Metalworking Tools, Bosch CO14B Twist Drill Bit Set, Drill Bits, Cobalt Drill Bits, cast iron (CO14B) at Amazon.

The lowest price we found is $6.89 while the highest is $49.99. Prices for the best Metalworking Multipurpose Drill Bits deals average at $26.63.

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