Double pitch hollow pin chain

The double pitch hollow pin chain is composed of alternating inner and outer chain links. The inner chain link is composed of an inner chain plate and sleeve or an inner chain plate, sleeve, and roller, while the outer chain link is composed of an outer chain plate and a hollow pin shaft. The hinge is formed by the combination of the hollow pin shaft and the sleeve. This structure allows the chain to be flexibly inserted into accessories or crossbars during transportation without the need to disassemble the chain