This product is an essential replacement pack containing four (4) robust control knobs, specifically engineered for commercial, gas-operated egg bread/burger maker machines designed to produce 10 pieces simultaneously. These high-capacity machines are vital for busy commercial kitchens, including restaurants, cafes, and large catering operations, where efficient and consistent production of egg patties or moulded burger buns is critical. The included knobs are indispensable for precise control over gas flow and heat, ensuring uniform cooking across all 10 slots.