About this item 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 hard metal Wide Range Of Applications: This product can drill 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 Jobber Length: 1/4 inch cutting diameter, 2-3/4 inch flute length, 4 inch overall length, 135 degree split point Include: 10 pieces of 1/4 inch cobalt drill bits with case 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 Overview Material: Cobalt Steel Cutting Diameter: 6.35 millimeters Finish Type: Gold Oxide Shank Type: Round Cutting Angle String: 135 degrees
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