17/32 in Cobalt Drill Bit Set (4pcs) - M35 HSS Jobber Length

In this review the 17/32 in Cobalt Drill Bit Set (4pcs) is evaluated for tradespeople and hobbyists who need a single-size, tough bit for hard metals. The bottom line: this M35 cobalt set is best for users who want a focused, durable solution for drilling stainless steel, cast iron and other difficult materials without buying a whole index of sizes. The kit's 135 degree point and jobber length design make it straightforward to use in a handheld drill or drill press, and the compact index storage case keeps the four bits organized between jobs.

Key Features

• Single Size: Supplies four identical 17/32 in bits so users get consistent hole diameter for repeatable work and projects.
• M35 Cobalt Alloy: Built for cutting stainless steel, cast iron and other hardened metals while still handling wood and plastic when needed.
• 135 Degree Point: The split-point tip promotes self-centering to reduce walk-off and start holes cleanly without a pilot in many applications.
• Jobber Length: The standard jobber length balances reach and rigidity for general metalworking and workshop use.
• Hardened and Polished Flutes: Polished surfaces and hardened inserts improve chip evacuation and reduce wobble during drilling.
• Index Storage Case: A small, sturdy case keeps the four bits sorted and protected for transport and storage.

Who It's For

This set suits metalworkers, mechanics and serious DIYers who frequently drill the same 17/32 in hole in stainless steel, iron castings or similar materials and want M35 durability without buying a mixed set. It also fits small shops that prefer keeping spare bits of one commonly used size on hand.

Those who need a variety of sizes, a hardened drill set for high production CNC work, or a guaranteed premium longevity warranty should look elsewhere; this kit is a focused solution rather than a full-range or lifetime-guaranteed collection.

Pros & Cons

Pros

• High-speed M35 cobalt composition provides strong cutting performance on hardened metals.
• 135 degree point and twist design reduce walking and speed up hole starting.
• Includes four identical bits with a compact storage case for easy organization and spares.
• Hardened, polished flutes improve chip removal and reduce vibration during use.

Cons

• Only one drill diameter is included, so the kit is not suitable when multiple hole sizes are needed.
• Some buyers report mixed experiences on long-term durability under heavy production use.

Specifications

Our Verdict

The 17/32 in M35 cobalt drill bit set is a practical buy for anyone who regularly needs that specific diameter in hardened metals and wants a durable, self-centering bit with reliable chip removal. It delivers clear value as a focused, work-ready kit with a handy storage case, though buyers who need multiple sizes or industrial-grade longevity should consider fuller sets or higher warranty options.

Frequently Asked Questions

Are these bits good for stainless steel?
Yes. The M35 cobalt composition and 135 degree point are designed to cut stainless steel and other hardened metals effectively.

How many bits are included?
The kit includes four identical 17/32 in drill bits stored in a compact index case.

Can these be used in a handheld drill?
Yes. Their jobber length and split-point tip make them suitable for handheld drills and drill presses for general metalworking and DIY tasks.