SENQCIA Inspire Series 304 Stainless Steel riveted Double Pitch roller chain is manufactured . They offer excellent resistance against many forms of chemical attack and operate in temperatures ranging from -250 to +750 degrees F. Packaged chains are supplied 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.