ITEM NAME:Chain Guide Guard Sprocket Protector For Aluminum Alloy + PU Description: 100% Brand New ! Aluminum alloy + PU ï ¼Å¡ Highly resistant to shock and chain wear In the event of collision or contact with roost, material won't bend Mounting bolts included, Easy to install Each item has been tested before.Aluminum alloy + PU ï ¼Å¡ Highly resistant to shock and chain wear. Material:Aluminum alloy + PU. 1 Piece Chain Guard. Color: blue.