04B offset links are also called 04B half links; an offset link is designed uniquely to adjust the length of a chain by half a pitch. 04B offset links come in handy when removing or adding a small length in the chain or repairing an existing chain. The DUROCHAIN 04B offset link is constructed from the best quality raw carbon steel materials; each component undergoes a set of particular processes to improve strength, fatigue resistance, and performance. Finally, we produced a genuine tier one 04B offset link to pair perfectly with our premium 04B roller chain! Discover the latest in roller chain technologies and innovations when you choose DUROCHAIN!