Features: Jumper cable made of high-quality PVC is excellent resistance to freezing, cracking folding. Insulated handle of the jumper cable over the clamps is full leather, ensure your safety. The strengthening clamp is more sturdy, and the solid sheath is so safe by insulation. Color recognition applied by booster cable, red is positive, and the black is negative. Core material of the jumper wires is copper-clad aluminum, which won\'t broken at -40C. Booster cable is suitable for coupe, sedan, SUV, van and trucks.(under 2.5 displacement)