Superstrong， flexible bulk bungee cord stretches safely up to twice its original length without cracking， breaking， splitting or becoming brittle. High-tech， ultralight polyurethane resists UV rays， oil， salt water， gasoline/diesel fuel and most household chemicals. Bungee works great in the cold or heat and humidity. 50'L. High-strength plastic hooks (sold separately) for 1/4"-dia bungee (Item #228229) and 5/16" (item 228230) won’t mar your load or vehicle.