Olfa Rotary Circle Cutter CMP-3Effortlessly cut perfect circles from 1 1 2 to 8 3 4. Patented ratchet handle aligns the hand and wrist to help reduce wrist fatigue and the handle design creates a stirring the soup cutting motion, preventing uncomfortable twisting or strain on the wrist. Built in blade cover and plastic pivot spike guard for safety when not in use. Includes and fits the OLFA 18mm rotary blade.