80 roller chain A Series 16A-1 1.material:40MN/A3 2.pitch:25.4mm 3.plate thickness:3.20mm 80 roller ... chain A Series 16A-1 1.material:40MN/A32.pitch ... , 428, 428H, 520, 520H, 530, 530H, 05MA, 05MB, 05MC, 06MC 2. O-Ring Motorcycle chains: 428SO,520SO,525SO,530SO3. Roller chains ...