Top quality stainless steel brake disc with noise reduction during braking. Alu spider reduces weight. product # Image Size Compatibility Weight DCR063 203mm 6-Bolt Disc 175g DCR060 180mm 6-Bolt Disc 151g DCR061 160mm 6-Bolt Disc 125g DCR062 140mm 6-Bolt Disc 109g DCR073 203mm Center Lock Disc 187g DCR070 180mm Center Lock Disc 163g DCR071 160mm Center Lock Disc 137g DCR072 140mm Center Lock Disc 122g