Draper - Heavy Duty Booster Cables (3m x 25mm) Expert Quality, heavy-duty booster cables fitted with heavy-duty handles with a PVC cover. The pure copper cable is insulated with TPE, making the cable ultra-flexible. Suitable for 12V/24V systems and on petrol and diesel engines commonly found in cars and commercial vehicles. Stock Nos; 91883, 91879 and 91978 are Supplied in a luxury padded EVA storage bag and stock No; 91874 Supplied in a sturdy plastic carry case.