The AllPoints Foodservice Parts & Supplies 22-1055 Control Knob & Dial features a 2-inch diameter design, allowing for precise adjustments from off to low, 2, 6, and high settings. This black knob is a direct replacement for Delfield part SEP90086 and Seco parts 724 and 0177950, ensuring compatibility and ease of installation. Ideal for maintaining optimal performance in foodservice equipment, this durable knob enhances functionality and user experience.