The AllPoints Foodservice Parts & Supplies 22-1381 Control Knob & Dial features a 1-7/8" diameter design, allowing for precise adjustments between off, low, and a temperature range of 250-500 degrees. This durable replacement part is compatible with Southbend model 1179998, ensuring seamless integration into your existing equipment. Ideal for enhancing the functionality of your foodservice appliances, this control knob and dial provides reliable performance and ease of use.