1.Type cb400 2.Good Raw Material 3.Excellent Surface 4.Customizable 5.OEM offer cb400 Full set sprocket in Black Color powerful and trustworthy Brand:Qidong10Years of production experienceType diversificationWe can Custome any Type you needLife Time:10 Years Buying tipsThe most popular, the low speed, small power, can choose the A3steel Carburizing, quenching,tempering, HRC50 ~ 60 have impact ...