Holds sprockets and rotors with holes center-to-center at a minimum distance of 1/2" (13 mm) and a maximum distance of 9" (230 mm) Keeps flywheels, rotors and sprockets from rotating during removal and installation Universal adjustable stop-screw keeps tool open at set distance Features 5 mm and 9 mm pins. TOOL-ROTOR&SPRKT HLDR.