Shengzhou Tomorrow Machinery Co.,Ltd manufacture Flexible Steel Pintle Chains 88KF10 High Precision Roller. The roller chain of Mr. Sprocket is a durable, high-quality, precision chain made of 1045 steel and stainless steel. This roller Chain is manufactured with optimum performance, durability and strict quality control standards. Another thing worth noting about this roller chain is that it is fully compliant with all ANSI standards, ensuring proper contact between the roller chain and the sprocket, preventing premature wear or breakage. we can offer these at very good prices with fast lead times.