5/8", Silver & Deming Drill Bit, Bit Is Constructed Of M-7 High Speed Steel For High Resistance To Abrasion During Tough Drilling, 3 Flatted Shank Design Provides Better Chuck Grip & Reduces Slippage, Ideal For Use In Keyless Chucks, All Silver & Deming Bits Are 6" Long & Feature 1/2" Reduced Shank That Fits All 1/2" Drills, Standard 118 Degree Point For Use In Wood, Metal & Plastic, Used To Create Large Holes, Heavy Duty Metal Drilling, Automotive, Body Shop & Metal Fabrication.