... standard:ISO/ANSI/DIN fast delivery 415 good quality motorcycle roller chain,1)material:40mn2)color : nature,black,blue,yellow3)advanced ... heat treatment process, mesh belt conveyor furnace use,chain dry machine4)standard:ISO/ DIN /ANSI5)pre stretch and anti fatigue ... ,also can packing as your requirementMain products as the following1)roller chains: A series(12.7-63.5mm pitches),B series ...