Five Sixteenth Inch Cobalt Drill Bit Set Thirteen Piece M35 High Speed Steel With 135 Degree Tip Heavy Duty Jobber Length Twist Drill Bits For Hard Metals Stainless Steel Cast Iron Wood And Plastic Includes Storage Case
✔️ 13-piece set: 5/16 in dia (8 mm), 3 in flute length (76.2 mm), 135-degree split point
This high performance cobalt drill bit set is forged from M35 high-speed steel with about 5% cobalt, delivering exceptional hardness and wear resistance for drilling through stainless steel, cast iron, titanium alloys, and through plastics and wood. Each bit features a self-centering 135-degree split point and polished cutting edges for fast, clean holes.
✅ 5% cobalt M35 HSS for extra wear resistance
✅ 135-degree split point for easier penetration
✅ Self-centering, polished tips for clean holes and quick chip removal
✅ 8 mm diameter (5/16") and 76.2 mm flute length for hard metals
💡 What is a cobalt drill bit set used for in metalworking and other hard materials? This handy choice helps you drill stainless steel, cast iron, titanium alloys, and tougher plastics with less heat buildup. - Drills through hard metals with longer life due to cobalt alloy - Maintains hole accuracy with a precise 135-degree tip - Delivers faster chip removal and smoother operation in metalworking - Suitable for woodworking and softer plastics when needed