Includes all four items needed to connect a beer line to your draft beer system. Includes 1 of each for 1 connection: Beer Nut, Washer, SS Elbow Tail piece to connect to 3/16'' ID tube and Clamp. Elbow Tail Piece is useful where space is limited so that beer line will not need a sharp bend. It is made of 304 Grade Stainless Steel which is more sanitary and durable. This ensures that contact with beverage is 304 Grade SS. Good for use with Beer, Wine, Coffee, Water etc.