The flat paddle design features a sharp cutting edge ensures the hole smooth and clean. A 1/4 inch hex shank fits into all power tools more easily and securely, specially for locking into quick change chuck. The sharp bit allows for accurate drilling to most types of wood, PVC, soft metals and more. Fast hole. Beveled edge cuts faster than standard spade bits. Assorted Three Point Flat Spade Wood Drills 3/8, 1/2, 5/8, 3/4, 7/8, 1 in X 6 in Long, 6pk