Chains about 160 cm long. The swing seat is suitable for the following swings: 220001M, 220002M, 137414M, 137412M, 137418M, 175074, 175075, 220061M and 230050. The chains are made of polished austenitic stainless steel, 6 mm in strength. The chains have a protective cover for children. The seat is ergonomically designed. The seat frame is made of aluminum and is covered with black rubber.