wearproof motorcycle sprocket Various Models and specification
characteristic :
1.type---420,428,520
2.specification---13t~18t,32t~50t,or make as your requirement
1.raw material --- high quality raw material in A3# and 45# carbon steel
2.heat treatment---harden and carburize frequency quenching
3.surface treatment---lines clearly,grind,immersion oil
4.color---black,golden yellow,silvery
5.experience---Years Of Production Experience
wearproof motorcycle sprocket