The Standard Roller Chain and Lifting Roller Chain are designed with a focus on durability and efficiency. Both chains consist of a series of identical links that interlock to form a continuous loop. The links are typically made from high-strength steel, which is then heat-treated to enhance its toughness and wear resistance. The rollers within each link are designed to reduce friction and facilitate smooth movement, while the bushings and pins provide flexibility and strength. https://www.mgchain.net/product/heavy-duty-roller-chain/60h1-reinforced-roller-chain.html