The AllPoints Foodservice Parts & Supplies 221216 Control Knob & Dial is designed for precise temperature control in foodservice equipment. With a 2-1/4" outer diameter, this thermostat knob features a temperature range of 200° to 550° F, allowing for versatile cooking applications. The 1/4" D-stem ensures easy installation and compatibility with various appliances. Made from durable black plastic, this knob combines functionality with a sleek appearance, making it an essential component for maintaining optimal cooking conditions.