Cottered chains are generally specified for larger pitch sizes when field assembly or disassembly is anticipated. Chain pins are produced from a special chrome-moly alloy steel to improve strength. 180 Cot ASME/ANSI Std RllrChn SnglStrnd 10Ft Bx 2-1/4" Ptch,180Cb,PK10 Packaged chains are pre-lubricated with high quality wax-type grease and come with a necessary connecting link to join the ends.This chain is packaged in a 10ft box.