6 Piece, Hex Shank Drill Bit Set, Durable Rubber Finger Grips For Comfortable Use, Impact and Rust Resistant Nickel Plated Nose, Stainless Steel Interior Parts and A Pressure Activated Ball Groove System For Rapid Loading and Strong Retention, Provides Quick and Easy Accessory Changes Without Rechucking, Accessories Have A Hex Shank Locking System To Prevent Slipping, Rapid Load Holder Fits All Brands Of 3/8" and 1/2" Cordless and Corded Drills, Set Contains 1/16", 3/32", 1/8", 5/32", 3/16", and 1/4" Hex Shank Drill Bits.