motorcycle chains 428 1) material:40MN 2) pitch:12.7mm 3) plate thickness:1.6mm 4) colors: natural,blue,black,yellow Motorcycle chains 4281)material : 40mn2) ... .525-50.8mm pitches)2)motorcycle chains :415,415H,420,420H,428,428H,520,520H,6303)short pitch conveyor roller chain attachments:A-1 ... SA-1,SA-2,SK-A,SK-24)double pitch transmissions v& conveyor chains :2040,2042,2050,2052,2060,2062,2080,2082 ...