Usage Tips:[Compatible with DeWalt 20V MAX Batteries]The jumper cables are compatible with DeWalt 20V MAX batteries. When your car battery dies and strands you, it can be hard to find someone to help start the car. You can conveniently start the car with the power of an available cordless tool battery Specifications: 8-gauge booster battery jumper cable for starting bad or weak batteries. Perfect for trucks, SUVs, full-size cars, midsize cars, and compact/compact cars Instructions for use: ①Connect the red battery clamp of the jumper cable to the positive terminal (+) of the vehicle and the black clamp to the negative terminal (-). ②Insert the battery into the adapter and make sure it is securely locked. ③Try to start the car. ④After successfully starting the car, disconnect the connection between the car battery and the tool battery Note: It is best if the battery is charged above 50%. If the first ignition fails, wait a few minutes and try the ignition again. If the ignition is successful, remove the cable within 30 seconds. The jumper cable has an insulated handle to prevent electric shock and protect the user's safety Colour:yellow Material:ABS Package Contents: 1 * Car auxiliary starter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.