motorcycle sprocket chain wheel 1/1023 or 1045 steel 2/6.5--7mm ... 3/HRC40-50 hardness 4/ISO9001 certificate Motorcycle sprocket chain wheel feature:1\high quality steel materials:1045(C45 steel) ... , we can make it for you.6\ main market:indonesia,india,Vietnam,south america,brazil,middle east,north america, canada ... SAMPLE PICTURESPackage: Motorcycle sprocket CG125 /motor bike drive chain wheel set