The AllPoints Foodservice Parts & Supplies 221031 Control Knob & Dial features a durable black plastic construction, designed for long-lasting use. With an outer diameter of 1-1/8 inches and a depth of 1-1/8 inches, this knob is easy to grip and operate. It includes a set screw for secure attachment, ensuring reliable performance in various foodservice equipment applications. Ideal for replacing worn or damaged knobs, it enhances functionality and maintains the aesthetic of your appliances.