The AllPoints Foodservice Parts & Supplies 221239 Control Knob & Dial is designed for gas valve applications. This durable red plastic knob features an off/on function, ensuring easy operation. With an outer diameter of 2-7/8 inches and a 1/4-inch D-stem, it fits a variety of gas valve systems, providing a reliable and efficient solution for your foodservice equipment. Its bright color enhances visibility, making it user-friendly in busy kitchen environments.