Unior freewheel remover 18 12x18this freewheel remover is designed for removal of single speed freewheels which are broader than multi speed freewheels the chain fits precisely to the freewheel teeth and thus enables effective work without slipping or damaging the sprockets an added retaining spring is a special feature distinguishing this tool from similar products features material special tool steel hardened and tempered surface finish chrome plated according to en12540 chain whip