Strictly Selected Materials The car battery terminals are made of pure copper, corrosion-resistant and durable, also have the best electrical conductivity, can reduce voltage distortion. The nuts and bolts are made of galvanized iron alloy, very stable conductivity, it can be used in a complex environment for a long time. Easy to Install The binding post adapter is used for battery extension, parallel connection and grounding. The thread on the clamp makes it easy to install. Simply tighten it with a suitable wrench. The wiring is stable and does not fall off easily. Safe to Use The positive and negative battery terminals are clearly marked for easy identification. Designed for high current applications, can meet your different needs. The car battery quick connector is easy to recognize and avoids the risk of electric shock. Red is positive and black is negative. Features of Brass Battery Terminals The anti-corrosion alloy increases the service life, ensures good starting performance