The Devco® ED600 Red lens color, Polycarbonate lens material, Incondescent bulb type, 28 Volt, pack of 2 terminals are tin plated brass. wire leads are 22 AWG, 4.4 in. – 4.8 in. long, 1/2 in. stripped. Mounting will snap-fit into .500 in. – .505 in. diameter hole in .020 in. – .100 in. thick panels.