The metal part is made of zinc alloy, , good conductivity, and long life. The shell is made of PP insulated fireproof material, safe. High pressure resistance, high melting point, high temperature resistance. Features - Color: White. - Size: 1.70X1.50X1.30cm/0.67X0.59X0.51 inch. - Material: PP, zinc alloy. - : 10A. - The internal conductive part zinc alloy firmware, the conductive performance is high, the insulation performance is good, and safety. - Each position will accept two wires, the terminal strips can be easily cut with utility or scissors to your desired strips or to create your custom sections. - quality and easy to use. Only 3 steps: firstly, loose the screws, and then put the peeled wires into the terminal, finally fasten the screws and over. - There is a clear mark on the surface. L end connects the . connects neutral lines. - The push to insert style really onto the wire once inserted yet is easy to remove at the push of a button. Package list: 30 x screw terminal blocks