The AllPoints Foodservice Parts & Supplies 221012 Control Knob & Dial features an infinite control dial with a diameter of 1-7/8 inches. It is designed to fit a standard .187-inch diameter D-stem, ensuring compatibility with various equipment. The knob is crafted from durable black plastic and showcases a sleek chrome face, providing both functionality and a modern aesthetic. The flat design positions down in the off position for intuitive use. Ideal for precise temperature and power adjustments in foodservice applications.