Fits panels through 1"(2.54cm). Insulated. 25 Amps @ 6V DC. 15 Amps @12V DC. Supplied with chrome plated brass face nut, brass washer and back-up nut. Stainless steel springs. 2-7/8"(7.3cm) Length. Mounting stem 1-1/4"L (3.18cm), 5/8" - 32 thread dia.