1/2 inch Cobalt Drill Bit for Metal and Hard Steel(2pcs),M35 High Speed Steel Twist Jobber Metal Drill Bits,with Index Storage Case

Key features

• M35 Cobalt 5% Material: High cost, but hardness is up to 67, cut faster and has a long life, up to 12 times compared with the average HSS titanium coated bit
• Hardened Full Grinding Process: Increases wear resistance, sharp and durable, used for stainless steel, cast iron, hard sheet, flat bar, mild tube, zinc alloy, titanium, aluminum and hardened metal
• Jobber Length: 1/2 inch cutting diameter, Jobber Length: 1/2 inch cutting diameter, 4 inch flute length, 6 inch overall length, 135 degree split point, rounded for Easy Fitting into Any Drill or Rotary Hammer
• Wide Range Of Applications: This product can drilling through hard metals such as stainless steel, cast iron, zinc alloy etc., while the HSS titanium-plated version you usually see can only be used on soft materials such as wood and plastic
• Use Notices: Drill bit should be vertical to the workpiece when used; controling low speed from 200 to 1000 rpm; using cutting fluid will stay cool to make the bit last longer

Free shipping included. 30-day hassle-free returns.