. Offset links (used to shorten or lengthen a chain strand by 1 pitch) are also available and sold separately.180 Riv ASME/ANSI StdRllrChn SnglStrnd 10FtBx 2-1/4" Pit,180Hmrb,PK10 This chain is packaged on a 10ft box. Packaged chains are pre-lubricated with high quality wax-type grease and come with a necessary connecting link to join the ends.