Aluminum sausage stuffing attachment, also known as a sausage stuffing horn. Tube fits #12 meat grinder is 3.5 inches long with 3/4 inch opening. Perfect for stuffing hog casings and can also be used for larger diameter casings and ground meat bags. To use, grind and mix the meat then remove the plate and knife from the grinder. Place the tube through the grinder ring and hand tighten. There will most likely be alot of play in the tube but back pressure will tighten it up.