... copper terminal block 1.plastic shell: PE PP PA 2.Connection rows:1-12 3.Insert:Brass 4.Screw:Galvanized iron Durable copper ... white2. Current/Voltage/Power: 250-450V 3. Material: pure copper, Fire retardant4. Good Service :Shipment on time, offering relative ... quality PC PP PAInside MaterialHeat-resistant PA66 Nylon for back copper. High quality brassColorNature Black,Bule ,Red ,Other colors ...