... Yamaha,suzuki material:40mn/45mn standard:ISO/ANSI/DIN 428H high quality motorcycle chain,suit for all kinds of motorcycles as Yamaha,suzuki1 ... ,chain dry machine4)standard:ISO/ DIN /ANSI5)pre stretch and anti fatigue to make chain life longer6)manufacture and OEM7)packing ... .5mm pitches),B series (9.525-50.8mm pitches)2)motorcycle chains :415,415H,420,420H,428,428H,520,520H,6303 ...