This offset link is made specifically for 81X Stainless Steel conveyor chain. Offset links are also commonly known as half links, they are primarily used for adding additional links into the chain. This offset 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 offset link is constructed entirely of top-quality 304-grade stainless steel. For more information and general questions please contact us.