roller chain,roller chain,roller chain,roller chain,roller chain,roller chain,roller chain,roller chain,roller chain ANSI 80 /DIN 16A-1 standard roller chain 1.material:40MN/A3 2.pitch ... :25.4mm 3.plate thickness:3.25mmANSI 80 /DIN 16A-1 standard roller chain 1.material:40MN/A32.pitch:25.4mm3 ...