These Plastic Sausage Stuffer Tubes are 1 9/16" at the base where they connect to the sausage stuffer and are almost 5" long. Tube sizes are 1/2" (12mm), 3/4" (19mm), and 7/8" (22mm) ID and the OD measurements are 11/16" (17mm), 7/8" (22mm) and 1" (25mm). Very little taper.For use with many bra..