http://www.chaintransmissions.com/chain-transmission/roller-chain/ PRODUCTS DESCRIPTION Chain Size Pitch (P) Roller Width (W) Roller Diameter (D) Overall Width (A) Plate Height (H) Plate Thickness (T) Pin Diameter (E) Avg. Ultimate Strength Weight (Per Ft) CHAINS FIELDS OF USE Roller chains are designed for general use in light and heavy industry. They are used in drives, but they can be fitted with attachments to transport material. WHY CHOOSE US? 1. YQ.Chinatransmission is located in Hangzhou, China. Established in 2010. We have a chain factory. 2. Qualified alloy steel chains make our YQ brand chains in top quality level in China. We are honored to obtain ISO9001. ISO14001. AAA credit certificate. 3. We have been producing all kinds of standard chains and special chains: drive chains, agricultural chains, conveyor chains, long pitch conveyor chains, stainless steel chains, lifting chains, motorcycle chains, forged rivetless chains, etc. COMPANY PROFILE Roller Chain suppliers website:http://www.chaintransmissions.com/chain-transmission/roller-chain/