The Imperial 2721 Charbroiler Chrome Burner Valve Knob provides reliable burner control for smooth and precise operation of compatible commercial charbroilers. Designed as a replacement control knob, it features an Off/On marking, a 2-3/8-inch diameter, and a 1/4-inch D-stem with a flat-up orientation and 1/4-inch protrusion for a secure fit. It works by attaching to the burner valve ... https://partsfe.ca/knob-imperial-for-imperial-part-2721