What people love (and don’t love)
What people love
- Sharp and durable 5% cobalt drill bits that cut through hard metals effectively.
- Good value for the price with high performance on metals and plastics.
- Functional storage case with easy-to-read markings (despite some minor damage reports).
- Bits hold up well during extensive use without quick wear-out or breakage.
- Works great on tough materials like stainless steel and steel pipes with proper lubrication.
What people don’t love
- Some doubts about whether bits are solid cobalt or cobalt-coated.
- Storage case sometimes arrives damaged or broken.
- May not perform well on extremely hard materials close to Rockwell hardness 62 or higher.
- Bits can snap if used too fast or with too much force without lubricant.
- Packaging expectations differ; some expected a different case style.
Durable and sharp cobalt drill bits offering great value, best with proper care and lubrication.
Summary based on customer review evidence.
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.
- M35 cobalt steel (5% cobalt) twist drill bit set for drilling tougher metals
- 19 metric sizes from 1mm to 10mm in 0.5mm increments
- 135° split point helps reduce walking and supports cleaner starts
- Gold oxide finish with jobber-style twist design for chip removal
- Straight shank, 2-flute design; includes sturdy plastic storage case
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