#5 SET (3) plates and (1) knife for Chefs Choice meat grinder food chopper for Kitchenaid mixer #5 (3) meat grinder plates AND new knife Premium Stainless Steel Plate and knife FITS CHEF CHOICE attachment for Kitchenaid Plates measures 2 1/16" diameter. Size 3/16" (burger), 3/8" (chili), 1/2" (course)