... 40MN,A3,SS3042.Standard:ISO/DIN/ANSI3.Manufacturer and OEM are both ok! 4.color:natural. ... to better antirust6.long-life duration and high strength7.pre-stretched and anti-fatigue8.produce as your ... sample or drawing9.sound quality,reasonable price and prompt delivery are what we persue10.Packing: ... , 428H, 520, 520H, 530, 530Ha. O-Ring and X-Ring Motorcycle chains: 428SO,520SO,525SO,530SO4. Silent ...