Features: Made of good quality materials, sturdy, durable and wear-resistant. Copper has good conductivity, reduces voltage distortion, reduce the transmission loss of current. Corrosion resistance, good conductive performance, wiring is convenient, and the connection is firm. The pile head will not break, corrosion resistance, can reduce the voltage distortion and the current transmission loss. Easy to install and replace the old or broken one, do not need to drill or any tool. Specifications: Material: Nickel plated copper Color: As shown in picture Positive Internal Diameter: Approx. 19 mm/0.75 inch Negative Internal Diameter: Approx. 17 mm/ 0.67 inch Weight: Approx. 134 g Packing List: 2 * Terminal Connector Clamp 4 * Copper Wire Head Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. 1Made of good quality materials, sturdy, durable and wear-resistant. 2Copper has good conductivity, reduces voltage distortion, reduce the transmission loss of current. 3Corrosion resistance, good conductive performance, wiring is convenient, and the connection is firm. 4The pile head will not break, corrosion resistance, can reduce the voltage distortion and the current transmission loss. 5Easy to install and replace the old or broken one, do not need to drill or any tool.