60PCS Cobalt Drill Bit Set M35 HSS Twist Jobber Drill Bits - Indexed

In this review of the 60PCS Cobalt Drill Bit Set M35 HSS, the bottom line is clear: this set is aimed at hobbyists and tradespeople who need a broad range of sizes and a bit more toughness for hard metals. The standout reason to buy is the M35 high speed steel with 5% cobalt, which is designed to extend tool life when drilling stainless steel, cast iron and other high tensile materials. The set also includes a clearly indexed metal case and a full #1 to #60 range, so it works well for projects that need many hole sizes without constant bit changes.

Key Features

• M35 Cobalt High Speed Steel: The cobalt alloy composition improves heat resistance and wear life when cutting hard materials like stainless steel and titanium alloy.
• 135 Degree Split Point: The self-centering tip helps prevent walking and allows faster, more accurate starts without a pilot hole in most metals.
• Fully Ground Twist Design: Ground flutes clear chips more efficiently, reducing friction and heat for cooler drilling under load.
• Comprehensive Size Range: The set covers wire sizes #1 through #60 so it meets a wide variety of drilling needs across metals, plastics and wood.
• Indexed Metal Case: An organized holder with size markings keeps the bits protected and easy to locate on the bench or in a toolbox.

Who It's For

The set is best for metalworkers, mechanics and serious DIYers who frequently drill hard materials and want a full range of small wire sizes without buying individual bits. The cobalt content and split point make it suited to cutting stainless steel, cast iron and higher temperature alloys where standard HSS often fails.

Less suitable users include occasional hobbyists who will only drill soft wood or plastics and who may be satisfied with cheaper general-purpose bits. Also, if you rely on guaranteed long-term edge retention for heavy professional production use, some buyers have reported variable durability, so a premium industrial-grade brand might be preferable.

Pros & Cons

Pros

• Wide size selection (#1 to #60) gives flexibility for many projects and eliminates frequent purchases of single sizes.
• Higher cobalt M35 alloy offers improved heat resistance and cutting ability in hard metals compared with regular HSS bits.
• Split point tip and ground flutes deliver better centering and chip evacuation for cleaner holes.
• Metal indexed case keeps the set organized and protects bits in transit or storage.

Cons

• Customer reports on durability are mixed; some users experienced breakage or rapid dulling with heavy use.
• Build quality may vary between individual bits, so careful inspection before use is advised for precision work.

Specifications

Material	M35 high speed steel (5% cobalt)
Point Angle	135 degree split point
Shank Type	Round straight shank
Size Range	Wire sizes #1 to #60
Case	Indexed metal holder for storage
Typical Uses	Hardened metal, stainless steel, cast iron, high temp alloys, plastics, wood

Our Verdict

The 60PCS M35 Cobalt drill set is a practical, value-oriented option for users who need a wide variety of small sizes and better cutting performance in hard metals. It delivers useful features like a 135 degree split point and a metal index case, making it a smart buy for metalworkers and dedicated DIYers, though buyers seeking guaranteed industrial longevity should inspect bits and expect some variability in durability.

Frequently Asked Questions

Are these bits suitable for stainless steel?
Yes, the M35 cobalt alloy and split point are specifically intended to improve performance when drilling stainless steel and other hard metals.

What sizes are included in the set?
The set contains wire sizes #1 through #60, covering a broad range of small to mid sizes for diverse projects.

Does the metal case protect the bits?
Yes, the indexed metal holder stores bits securely and keeps them organized, which helps prevent damage during storage.