Use these flexible jump leads to boost your dead battery in no time! These handy jump leads are made from copper wire with a total cross section of 50 mm2. Thanks to the colour-coded grips (red and black) and insulated clamps, they minimise the risk of accidental shorting. These flexible car booster cables are easy to store with no tangles. They are suitable for all petrol and diesel engines up to 5000 cc.