2" (52mm) base diameter. Very common size Heavy grade stainless steel THREE Pack of the most popular size tubes needed for many electric or manual stuffers that are 10 lb or larger. INDUSTRIAL GRADE Replacement tubes for Manual Sausage Stuffers LIFETIME WARRANTY 3/8",1/2" 3/4" OD tubes If you are making home made sausage this is the tube set that you need. Fits most 7, 10, 15, 20 and 30 Liter models. Vertical or Horizontal style manual sausage stuffers. The smaller tube is 1/2" (12mm) exit diameter and the larger tube is 3/4" (20mm) exit diameter. *Tubes are 2" wide at the base. (52mm) 3/8" (10mm) diameter for small snack stick sausage. Fits casings 17mm and larger 1/2" (13mm) tube diameter for narrow sausage casings as small as 21mm. Fits collagen and natural hog casings. 3/4" (20mm) tube diameter for most traditional sausages. Fits collagen, beef and natural hog casings. Flat base welded stainless steel. Tapered tubes for ease when stuffing. Virtually indestructible. Lifetime guaranteed items. 2" (52mm) base diameter VERY heavy duty. Stainless steel is Food Grade material that passes all health department certifications. Much stronger than aluminum. These tubes are (7 1/2") long. View our complete store at https://www.ebay.com/str/butcherbaker