... 1 1.material:40MN/A3 2.pitch:25.4mm 3.plate thickness:3.20mm 80 roller chain A Series 16A-1 ... : 428SO,520SO,525SO,530SO3. Roller chains: A series and B series4. Silent chains: SC3,SC4,SC5,SC6,SC8,SC105. ... PIV chains: A0,A1,A3,A4,A5,A66. O-ring chains and xw-chains ... Roller Chain Process)We welcome to get your inquiry for further information.Best regards/Shi Roller Chain