60Ss600 Riv 600 Ss ASME/ANSI Roller Chain Single 10Ft Bx 3/4" Pit,PK10 This chain is packaged in a 10ft box. Offset links (used to shorten or lengthen a chain strand by 1 pitch) are also available and sold separately. They offer excellent resistance against many forms of chemical attack and possess percipitation hardened round parts for improved wear performance..