This Connecting link is made specifically for 81X Stainless Steel conveyor chain. Connecting links are also commonly known as master links, they are primarily used for connecting two ends of the chain together. This connecting link is made to be easy to use and easy to put on in the field, it is a premium quality high performance product. This connecting link is constructed entirely of top-quality 304-grade stainless steel. For more information and general questions please contact us.