HIGH QUALITY:The terminal block are made of high-quality copper guide plate with nickel-plated surface, which has good conductivity, strong corrosion resistance, not easy to be oxidized, and is rust-proof and durable. The shell is made of insulating plastic. Red and Black Insulated Terminal Barrier Strips: PVC insulation sheath, non-slip, anti-shock. Copper tinned to prevent oxidation. The center spacing is accurate, and the connection does not fall off. Can be cut. GOOD PERFORMANCE:Our double row screw terminal strips can help you to connect bare wires to avoid clutter, while jumpers allow signals or power to be distributed neatly, making wiring connection simpler and more efficient. EASY TO USE:The terminal strips are easy to install and hold in place by two screw holes at either end of the terminal. One mounting hole each end for fixed mounting.The fork terminal stripe can be cut in any position to meet with your different demand.