Switchcraft Type 12A Little-Jax shorting type phone jack. The switched terminal is normally closed and is usually connected to ground to eliminate hum when unplugged. Includes nut and washer Package of 2 Type 12A 0.275 bushing length. Mates with standard ¼" plugs and is available with 0.25" inside diameter bushing. Mono 2-Conductor. Includes nut and washer Tip is shunt