✅1 pair of negative (black) and positive (red) battery cable terminal clamps connectors, sufficient for daily use & replacement. A must-have for drivers: the battery terminal between car's battery & car's ignition system is crucial. ✅Battery terminal has good conductive performance & quick release. Corrosion-resistant aluminum terminals can reduce voltage distortion & transmission loss. Convenient wiring & firm connection. Best choice for your vehicle. ✅The pile head will not break, corrosion resistance, can reduce the voltage distortion and the current transmission loss.Corrosion resistance, good conductive performance, wiring is convenient, and the connection is firm. ✅Wide application: battery cable ends are widely applied for car, vehicle, RV and boat, which have a standard top post battery. ✅Easy to install and use, convenient wiring process, firm connection, not easy to damage. Before installation, please make sure that the battery is in a de-energized state. If the original terminal has deteriorated, please replace it with a new terminal - 100% brand new and high quality - Adjustable the output guage by the bolts & nuts - Easy Installation - Car Battery Termimal Set With Red & Black Plastic Covers for better protection - DIMENSION: --top post Battery Terminal with 65 x 28 x 20mm/2.6" x 1.1"x 0.8"(L*W*T) - Screw Thread Diameter: 8mm/0.3" - Positive Battery Terminal Hole Dia.: 18mm/ 0.71" - Negative Battery Terminal Hole Dia.: 17mm/ 0.67" - OUT POWER:--car battery terminals suit for 6V/12V. its Color:Red+Black (Positive + Negative) Description: The main components of the battery pile head is made of copper. Attachment screw and nut are not copper. Suitable for use in most vehicles Copper material has good conductive performance, good flexibility The pile head will not break, corrosion resistance, can reduce the voltage distortion and the current transmission loss. Corrosion resistance, good conductive performance, wiring is convenient, and the connection is firm. Specifics: Material: copper Positive inner diameter: 18mm Negative electrode inner diameter: 17mm Package including : - 1 x Car Battery Terminal (Positive) - 1 x Car Battery Terminal (Negative)