Description: Made of durable material. Fast and easy installation. A positive, a negative. Allen screw to secure the wire firmly. Outputs Interface: 1x 2 Gauge 1x 4 Gauge;2x 8 Gauge. Specification: Material: copper alloy material, nickel anti-oxidation on the surface. Color: gold Bottom size: Approx 4.5x2x2.5cm (LxWxH) Fixed to battery size: "ten" hole diameter is 18.2 MM. "one" hole diameter is 16.2 MM, equipped with a screw to tighten and secure. The diameter of the four holes in the pile is: 15MM, 11.5 MM, 6.5 MM, 6.5 MM. Package Includes: 1 Piece car battery terminal (positive) 1 Piece car battery terminal (negative) Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making payment. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand,Thank you