Size #52 meat grinder plate with HUB 3/16 (4.5mm) holes for typical burger grind meat PLUS A matching stainless heavy duty knife. Fit Hobart, Biro, Berkel and other heavy-duty size #52 meat grinders. This is the plate with the 3/16 (4.5.0 mm) holes for ground meat. Stainless Steel = no rust. Plate is 5 1/16 (129 mm) diameter. 13/16 (19.8mm) center hole. Knife 4.5 long. North America’s largest selection of stainless steel. Meat grinder parts and accessories.