Panel mount 24VDC solenoid, mounts in a 0.38" hole in panel using the supplied nut. Has 0.42" long x 0.10" diameter pin that pops outwards when 24VDC is applied. Has internal spring return mechanism. Looks like it could "shoot" the metal ball in an electronic pinball machine. Shaft/Pin extends about 0.25" outward when activated. Resistance is 54 Ohms. Brand New!