Description: 【High quality Material】:The car battery terminal connector is made of Pure copper tinned material, which provides better electrical conductivity and durability than other materials. 【Positive and Negative Terminal Clamps】:The terminal connector comes with both positive and negative terminal clamps, making it easy to install on your car battery. 【Easy to Install】: The positive and negative terminal clamps is easy to install, simply push the cable into the clamp and tighten the screw to secure it. The purpose of the product is to connect the battery and the power supply, stabilize the current, and protect the battery. 【Universal Fit】:The cable end connector is designed to fit most car batteries, ensuring compatibility with your vehicle. 【Durable Design】:The terminal connector is built to last and withstand extreme temperatures and harsh environments. Strong conductivity and long service life. Specification: Product attributes: positive pole 17.5MM, negative pole 15.9MM Wire size: 5.2 to 7.4mm (AWG size 1 to 4) or 16 to 35mm^2 wire diameter Size Chart: 6.6cm/2.60inch Package Includes: Optional: Style A: Positive and Negative Pile Heads,Red and black casing, red and black sheath Or Style B: Positive and Negative Pile Heads,Terminal block, insulating pad, cleaning brush, red and black casing, red and black sheath Or Style C: Positive and Negative Pile Heads,Terminal block, red and black casing, red and black sheath Or Style D: Positive and Negative Pile Heads,insulating pad, red and black casing Or Style E: Positive and Negative Pile Heads,Terminal block, insulating pad, red and black casing, red and black sheath Or Style F: Positive and Negative Pile Heads, insulating pad, cleaning brush, red and black casing Note: Please allow slightly errors due to manual measurement and different monitors.