Unior freewheel remover shimanothis freewheel remover is designed to remove shimano cassette freewheels it is made from hardened and tempered tool steel so that it is durable use the freewheel remover together with the unior 12 ratchet 190 1abi or any other 12 wrench features material special tool steel hardened and tempered for shimano sram sachs aris and sun race use the freewheel remover together with the unior 12 ratchet 190 1abi buyunior workshopfrom chain reaction cycle