... SPCC 2)Finish: Plain, black, etc. 3)Center distance:520mm Bicycle chain cover1)Material:Carbon steel SPCC2)Finish: Plain, black, etc ... .3)Center distance:520mm4)Center distance of hole:438mm5)The biggest regulated quantity between axis and rear axle ... days after receipt advance paymentPayment term: T/T, L/C Bicycle chain cover