100A 2wire porcelain terminal blocks; 1.metal fittings::iron,nickel plated copper; 2.current: 5A,10A,15A,25A,30A,60A,100A; Porcelain terminal blocks1.metal fittings::iron,nickel plated copper2.current: 5A,10A,15A,25A,30A,60A,100A3.wire and hole size:2wire 5hole4.it uses to connect wire 100A 2wire Porcelain terminal blocks