Pro Grade Cobalt Drill Bits 3/16 Inch 20 Pack M35 HSS Built For Steel Stainless Steel Cast Iron Wood And Hard Plastic Heavy Duty Metal Drilling Bit Set For Do It Yourself Pros
✔️ M35 cobalt HSS, 5% cobalt, 135° split-point, 20 pcs for hardened metals
This 20-piece cobalt drill bit set is built for high-speed drilling through hardened metals and tough plastics. Ideal for steel, stainless steel, cast iron, PVC, and wood applications in shops and job sites.
✅ 3/16 inch diameter (4.763 mm) with ±0.03 mm tolerance
✅ M35 cobalt HSS with 5% cobalt for higher hardness and wear resistance
✅ 135-degree split-point helps fast starting and reduces walking
✅ Suitable for hardened metal, stainless steel, cast iron, plastic, PVC, and wood
✅ Comes in a portable plastic case for convenient storage
💡 What is a cobalt drill bit used for in metalworking? A handy guide for tough materials. - handy for drilling hardened metal like steel, stainless steel, and cast iron - longer wear life under high heat with M35 cobalt steel versus standard HSS - reduces wandering on start due to 135° split-point, improving accuracy - use appropriate cutting speeds and lubrication for best results on metal and plastic