standard or non standard stainless steel chains,made according to ISO, DIN,ANSI,JIS,BS ... sprockets, special sprockets,motorcycle sprocket ,chain couplings, shafts, gears, box gears,roller chain, agriculture chain,leaf chain,conveyor chain,oliver chain,special chain,pulleys, taper bushes and racks ... CAM methods for design and advanced heat treatment craft. stainless steel extend pin chain with long pin