Whirlpool produces a wide selection of appliance brands, such as Whirlpool, Amana, KitchenAid, Maytag, Jenn-Air, Magic Chef, Roper, and Admiral. They also manufacture products for Sears-Kenmore and Ikea. The control knob is intended specifically for the surface burner on a range stovetop. It has a 2-inch diameter and is compatible with a D-shaped shaft. This component attaches directly to the shaft, enabling users to control temperature settings. Generally, a replacement is required when the current knob is no longer functional due to wear.