Designed for towing with steel and nylon/polypropylenerope 1.Material of hook:EH36 2.Certificate:CCS,ABS,BV,DNV,GL.LR,KR Long economic life of over 25 years. Warranty : We undertake to remedy any defective components, caused by poor design, material or workmanship for the goods supplied. Our liability is limited to replacing the defective parts, which appear within a period of 12 months from date of invoice, provided that our storage, installation, operating and maintenance manual is properly followed. Minimum maintenance The disc rotating system avoids high release impact on the hook and foundation. The towing hooks are free-swivelling so sliding or gliding plates are not required. SWL:70KN-1000KN (70kN, 150kN, 250kN, 450kN, 650kN, 1000kN) Testload :140KN-1500KN (140kN, 300kN, 500kN, 650kN, 1300kN, 1500kN) Releaseload:70KN-1000KN (70kN, 150kN, 250kN, 450kN, 650kN, 1000kN) Weight: 79KGS-1282KGS ( 79kgs, 174kgs, 414kgs, 534kgs, 918kgs, 1282kgs)