COBALT M42 DRILL BIT: Provides upgraded m42 cobalt jobber-length bits designed for durability, high heat resistance and hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum ENHANCED M42 ALLOY MATERIAL: Contains 8% cobalt alloy that delivers 10x life vs. standard bits HIGH-HEAT RESISTANT BITS: Withstand high-temperature applications for extended periods of time THICK WEB-HELIX DESIGN: Provides additional stability in tough applications SURFACE-HARDENED TIP: Penetrates tough abrasive materials SPLIT POINTS ON BITS 1/8 IN. AND LARGER: Allow for easy starts with no skating, eliminating the need for a center punch THREE-FLAT SHANK ON BITS 3/16 IN. AND LARGER: Deliver better bit grip