1.Materials: Pressed by 45# steel (SAE 1045), A3#(Q235|SAE 1023) and 16-Mn steel . 2.Good products and competitive price 1.We are professional manufacturer in prodcuing all kinds of motorcycle sprocket which are in Superior quality but with competitive price.2.We supply all kinds of motorcycle parts for JOG50( 3KJ, 3YK, 3YJ, 4JP), DIO50, GY6-50, GN125, CD70, CG125, AX100, WY125, JH70, GS125, ...