About this item SIZE SPECIFICATIONS: Outer Diameter: 1-5/16 inch. Inner Diameter: 3/4 inch. Thickness: 1/8 inch. INCLUDES: #12 fiber meat grinder washer (4 or 12 Piece Pack available). Fits Hobart, Biro and Torrey– suitable for many #22 meat grinders. PRECISION FIT: ensures the plate extends slightly beyond the end of the cylinder to create a secure fit between the knife and plate when the ring is tightened, preventing meat from slipping in between. PROTECTS YOUR GRINDER: stops the back of the worm from wearing down the inside of the cylinder. Commercial meat grinder part to replace a broken or worn out one.