ITEM NAME:2pc Battery Copper Terminal Pile Clamp Clips Screw Connector Negative & Positive 2pcs Battery Copper Terminal Pile Head Clamp Clips Connector Negative And Positive SPECIFICATIONS.(Material: Copper. 2) The product is made from copper,corrosion resistant, good electrical conductivity. Suitable for: 45-200A battery. 2) Color may vary slightly due to the color setting of each individual monitor.