Heavy-duty 2-position Off, momentary on. Normally off. Fits panels through 1" (2.54 cm) insulated. 25A/6V DDC 15A/12V DS. Supplied with chrome-plated brass face nut, brass washer and back-up nut. Stainless steel springs. Mounting stem 1-1/4" L. (3.18 cm), 5/8", 32 thread diameter. Overall: 2-7/8" (7.3 cm).