Cobalt Drill Bit Set 29 Piece M35 High Speed Steel Twist Jobber Bits Heavy Duty For Hardened Metal Stainless Steel Cast Iron Plastic And Wood With Indexed Round Case Sizes One Sixteenth To One Half Inch By One Sixty Fourth Inch And 135 Degree Split Point
✔️ Includes 29 jobber bits from 1/16 to 1/2 inch with 135° split point
This 29-piece cobalt drill bit set is made from M35 high-speed steel with 5% cobalt, delivering extended life when drilling tough metals. The bits feature a 135° split point and self-centering design to prevent wandering, plus a fully ground twist to efficiently clear chips. The set is ideal for stainless steel, cast iron, high-temp alloys, titanium, hard plastics, and wood. Each bit is sized from 1/16" to 1/2" in 1/64" increments, all stored in an indexed round case for quick selection and portability.
✅ M35 cobalt high-speed steel for extended tool life in hard metals
✅ 135° split point with round straight shank for self-centering starts
✅ Fully ground twist design clears chips fast and reduces heat
✅ Sizes from 1/16" to 1/2" in 1/64" increments (0.41-12.7 mm)
✅ Indexed round case for easy size selection
✅ Suitable for stainless steel, cast iron, hard plastics, and wood
✅ 29-piece set covers common drilling tasks
💡 What is a cobalt drill bit set used for in metalworking and why choose M35 cobalt bits?
These bits are handy for drilling hard materials and offering longer life in tough projects.
- cobalt drill bit set for stainless steel and cast iron with M35 HSS
- 135-degree split point for self-centering starts and reduced wandering
- 29-piece set from 1/16" to 1/2" (0.41-12.7 mm) covers common needs
- ideal for hard plastics and wood when strength matters