This shank is 2 1/8" long measured from the end of the threading to the end where the faucet attaches. A shank is used to attach a beer line to a faucet. The shank is mounted through a 1" hole in a wall, refrigerator door, cabinet, etc. The shank comes with a black flange on the front and a compression ring on the back. The compression ring is used to secure the shank to the mounting surface. All shanks come fitted with a tail piece for beer line connection. Faucet is not included. Larger and smaller sizes are available.