The booster cable & battery cable are produced according to U.S.A SAE Standard, German DIN Standard. The copper wire be used the 1# electrolysis super material ( copper content :100%). High-quality rubber, soft PVC & PVC with resistance to hold-40 , resistance to heat 105 , resistance to fuels and resistance to oil to be used for jacket, wear resisting, soft and anti-corruption . It is used for connection of the 12V and 24V car battery. It can be used as an imergency cable?in the case of battery disorder. It is a handy practical and safe tool to go with your car. Cable, clamp, inner-packing and outer packing( Such as the material of cable, color, clamp style, surface of the clamp : copperized, zinc-coated nickel-plated or plastic coated, printing style for inner packing etc.)all can be made and developed according to the sample from customer.