Toggle switch, contact form Dpst, number of connections 4, switch function on/off, AC contact rating 20a @ 125VAC, 10a @ 250VAC, HP 1-1/2, terminals screw, mounting hole 0.50 in. Dia., actuator style bat, actuator Length 0.687 in., stem Length 0.465 in., stem dia. And thread size 0.470 in., operating Temp. Range 0 Degrees to 150 Degrees F