Features: Battery booster cable is a great accessory to have in cars in case of emergencies. Full set (one positive cable with 2 clamps and one negative cable with 2 clamps). Color-coded and insulated clamp, effectively minimize the risk of accidental shorting. With dual construction and extra strong-grip pure copper teeth for firmly connection. 3m(9.8ft) or 4m(13.1ft) flexible long cable for easy and convenient connect with two cars. Specification: Condition: 100% Brand New Material: Rubber + Brass Wire Color: Black + Red Voltage: 12V Length/Current: 4m/2000A, 3m/1000A(Optional) Package Weight: Approx. 1269-1608g/44.8-56.7oz Operating Procedures: 1. Connect a red clip head (+) of the cable to the terminal of the positive pole of the dead battery. 2. Connect the other red clip head (+) of the cable to the terminal of the positive pole of the good battery. 3. Connect a black clip head (-) of the cable to the negative pole of the battery. 4. Connect the other black clip head of the cable to the engine casing or the car body. 5. When starting, please complete the operation in an instant, there must be 10 seconds of cooling time between the two starts. 6. The procedure for unloading the cable follows the reverse steps of installation. Package list: 1 * Pair of Battery Booster Cable Notes: 1. Operate in strict accordance with the operating procedures. 2. Check the marked voltage of the two batteries to ensure that the voltages of the two batteries are the same. 3. Turn off all the loads on the car, hang the gears, pull the hand brakes, and start the engine. It is forbidden to smoke near the vehicle. 4. If the car battery is frozen, it is forbidden to start, otherwise it may cause an explosion. 5. Please ensure that the battery wiring polarity is correct. 6. The car cannot be in contact with other vehicles during operation. 7. The battery will produce explosive gas! Wear a protective eye shield when installing the cable. 8. If the acid in the battery is accidentally leaked and splashed on your skin or eyes, rinse immediately with plenty of water and go to see a doctor.