The ACS Paws Freewheel Tool is a must-have tool for easy installation and removal of Paw style freewheels. This freewheel tool is built to last with a reinforcement ring between the prongs for maximum engagement and torque strength. Features: Fits PAWS 4.1, PAWS, PAWS HD, ACS Main Drive, and other freewheels with forged-in notches Fits over both 3/8" and 14mm axles Does not fit ACS CLAWS, Shimano, or White Ind. freewheels