The AllPoints Foodservice Parts & Supplies 221178 Control Knob & Dial is designed for durability and ease of use. With an outer diameter of 1-1/8 inches and a depth of 13/16 inches, this control knob features a .187-inch diameter stem for a secure fit. Made from sturdy black plastic, it offers a reliable grip and enhances the functionality of your equipment. Ideal for various foodservice applications, this control knob ensures precise control and adjustment.