... screw terminal block 1.plastic shell: PE PP PA 2.Connection rows:1-12 3.Insert:Brass 4.Screw:Galvanized iron Durable screw terminal ... customers request .7. Performance: Safe operation and excellent quality.8 .Main market :Egypt ,Indonesia ,Germany,Franch,Philippines ... PAInside MaterialHeat-resistant PA66 Nylon for back base. High quality brassColorNature Black,Bule ,Red ,Other colors customized Voltage ...