SENQCIA Inspire Series Riv Hollow pin type ANSI/ASME Double Pitch chains with large rollers are manufactured . The hollow pins and bushings are seamless for superior wear resistance. These chains are primarily used on conveyors with through rods inserted into the hollow pins Packaged chains are pre-lubricated with a rust prevent oil and come with a necessary connecting link to join the ends. Offset links (used to shorten or lengthen a chain strand by 1 pitch) are also available and sold separately. This chain is packaged in a 10ft box.