The AllPoints Foodservice Parts & Supplies ITN221019 Control Knob & Dial is designed for durability and ease of use. Made from high-quality black plastic, this control knob fits a .35" diameter 'D' stem, specifically compatible with model FMP158-1004. Its ergonomic design ensures a comfortable grip, allowing for precise adjustments in temperature and settings. Ideal for various foodservice equipment, this control knob enhances functionality and reliability in your kitchen operations.