... Industry 1.material:40MN/A3 2.pitch:31.750mm 3.plate thickness:4.00mm A series 100 chain ... :natural.black.blue.yellow5.has taken measures to better antirust6.long-life duration and high ... 520, 520H, 530, 530H, 05MA, 05MB, 05MC, 06MC 2. O-Ring Motorcycle chains: 428SO,520SO,525SO,530SO3. Roller chains ... : 420,428,520,525,530,630 (Racing Chains)7. Leaf chains: LH series8. Double pitch conveyor chains ...