SENQCIA Ultra-Max 600 series Stainless Steel riveted roller chain is manufactured .. 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.