Centralab 2506 ceramic (steatite) rotary switch - great for RF applications. 3 pole, 3 position, single section, shorting (make before break), 1-7/8" diameter, 1-1/8" depth behind panel. Please note these are new old stock switches with shaft length modified for a specific end customer's production (great for normal panel mount use with knob). Bushing 3/8"-32 thread, 3/8" long. 1/4" diameter shaft extends 3/8" long beyond end of bushing. Includes nut and lockwasher. Positive 30 degree index with adjustable stop. Rated 2.75 amp @ 15VDC, 230 ma. @ 115VAC. See photos. Comes in original box, which may or may not be damaged due to age.