The Boss Pet 15 feet large PDQ twisted dog chain features a heavyweight design. It has a bright zinc finish for enhanced weather resistance. The tie-out dog chain is designed for large breeds up to 60 lbs. It features a weldless double loop design with steel wire swivel snaps on both ends. Dog chainWeldless double loop chain with steel wire swivel snap on both ends3.4 mm - heavyweightPDQ assemblyBright zinc finishBest for dogs up to 60 lbs.20 ft.