1.scooter brake disc 2. stainless scooter brake disc/ brake disc accessories/ motorcycle partsbrake disc:1)Outer diameter:Φ245mm 2)Inner diameter:Φ56mm 3) Thickness:4mm 4)Distance of holes in cirum:Φ74mm 5)Dia.of hole:Φ8.5mm 6)Height:14.5mm 8)Brakeing effective radius:R103mmDetailed models are as below.DIO50,C50,TAC50,DIO50,CB125T,GY6-90,JH70,SY90,WIN100,GN5,CD100,H100S,MB100,HT100,GY6-150,S110, ...