The AllPoints Foodservice Parts & Supplies 221054 Control Knob & Dial is designed for precise control of oven valves. Featuring a .40" diameter stem and a secure set screw, this knob ensures a reliable fit and easy operation. The sleek black plastic construction is complemented by bold red lettering for clear visibility. Ideal for replacing worn or damaged knobs, this durable component enhances the functionality of your kitchen equipment.