High-quality materials The high-quality battery pole terminals are made of pure copper for higher corrosion resistance, which gives it good starting behavior, as well as the conductivity of the battery terminals for a longer service life. Plus and minus defined The pole clamp the 12v car battery in the case is a plus pole and a minus pole. Red is the positive pole, black is the negative pole Easy identification to avoid the risk of electric shock Wing nut The top of the car battery cable clamp is a wing nut that allows you to change the wire quickly and easily without using a wrench. And the wiring is stable and not easy to drop Anti-rust material The battery terminal is made of brass and has good anti-rust performance. The battery terminal clamp has a long service life even in a complex working environment. It can provide enough power for your battery for a long time. Widely used The battery clamp is suitable for most batteries of trucks, buses, automobiles, motorcycles, ships, etc.