Happybuying88 Bike Chainring Sprockets Cranksets Guard Protector 48t 4 Bolts 120mmColor: as picture Material: plasctic Features of Happybuying88 Bike Chainring Sprockets Cranksets Guard Protector 48t 4 Bolts 120mm Size:48T, 4 bolts, 120mm | Function: Prevents chain from jumping to the outside | Color: Showed in the picture | Material: Engineering ..