Meat Grinder Knives For Biro, Butcher Boy, Hobart, Torrey, Enterprise, Choprite II, Weston, And Most Meat Grinders 4 Arm Solid Drop Forged Knives. Solid DropForged knives are constructed of one solid piece of heavy duty dropforged steel. They are excellent for rugged meat processing jobs like busting frozen blocks or bone breaking.