This product is design of two heads, one is alligator clip and the other is cigarette lighter interface. Provide dual choice for the air pump and kindly notice that this cable is only for air pump using. The red clip must clamp the positive pole of the battery and the black connection to the negative pole. Sometimes most of the car electronics, such as air compressor which consumes large power. Some car cigarette lighter with the over-voltage protection and the car electronics could not be used directly with it. So our cigarette lighter adapter could greatly connect to use to help solve this problem. Type: Cigarette Lighter Adapter Material: Copper-Clad Aluminum Max Current: 30A Max Power: 12V x 30A = 360W/24V x 30A =720W Features: Clips, Cigarette Lighter Interface, Universal, Vehicle Tool Length: 20cm/7.87" (Approx.) Notes: If use high-power electrical alliances for a long time, kindly notice to start the engine to power the battery. Otherwise it may lead to serious power shortage of the on-board battery and the battery and engine broken. Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Cigarette Lighter Adapter