ALFA International Knife screws is replacement part for Bizerba meat slicers and fits in models SE12, SE12D. Replaces Bizerba # 57630620000. Made in USA. ALFA International is a leading provider of replacement Food Prep Parts and Restaurant Equipment to the Food Service industry. Hundreds of Chain Supermarkets and Restaurants trust ALFA's products every day. High quality replacement part and food prep equipment at affordable pricing.