WildBossy M35 5% Cobalt Metric Drill Bits Set (1

What people love (and don’t love)

What people love

High durability and sharpness due to 5% cobalt content.
Effective for drilling hard metals, plastics, and stainless steel.
Good value for the money with reliable performance.
Bits hold up well even after drilling multiple holes.
Clear and easy-to-read size markings on the case.

What people don’t love

Plastic storage case is flimsy and may break easily.
Some reports of broken or damaged holders inside the case upon arrival.
Uncertainty about whether the bits are solid cobalt or just coated.
Case not as robust or functional as expected from product photos.

Durable and sharp cobalt drill bits that perform well but come with a fragile storage case.

Summary based on customer review evidence.

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Quick facts

Brand: ‎WildBossy
Price: USD 27.99
Rating: 4.50 (618 reviews)

If you regularly drill stainless steel, hard metal, or cast iron, a standard HSS set can dull quickly. The WildBossy M35 5% cobalt metric drill bits set is designed for tougher cutting, featuring M35 cobalt steel and a 135° split-point tip to help reduce walking when starting holes.

You can view the current price and full details on Amazon here.

This 19-piece set covers common metric sizes from 1mm through 10mm (in 0.5mm steps) and comes organized in a sturdy plastic storage case, making it easy to grab the size you need and keep your bits together on the job.

The bits use a jobber-length twist design with a gold oxide surface and straight shank. They’re intended for materials including stainless steel, steel, and cast iron, and they can also be used on wood, aluminum alloys, and other metals. As noted by the brand, they’re not suitable for glass or ceramics; manage speed, pressure, and heat for best drilling performance.