a) materials: nylon,polyester,PP b) Double heat treated steel "J" hooks c) width:25mm-100mm D) length:0.5m-1000m Sell rachet Tie Down And Ropes, Lashing CargoFeatures:a) Weather-resistant, PE and PP webbing for strengthb) Double heat treated steel "J" hooks provide a secure hold without scratchesc) Quick automatic released) Ideal for cars, trucks, SUVs, boats and trailers. ratchet Tie Down.