Hougen® RotaLoc™ Frame Drill Kit, Imperial, 1/2 in, 5/8 in, 3/4 in Cutting Depth, 3/4 in Maximum Cutter dia, 6 pc, Bayonet Style Twist Lock, For Use with: HMD115 and HMD150 Magnetic Drill, M42 HSS. Hougen® RotaLoc™ 17700 Imperial Frame Drill Kit, 3/4 in dia Max Cutter, 1/2 in, 5/8 in, 3/4 in D Cutting, 6 pc