The Allpoints 221003 Thermostat Knob Dial provides a simple and reliable way to adjust temperature settings on compatible commercial foodservice equipment. Designed with a 2-inch diameter, black finish, and silver indicator, this control knob attaches to a thermostat shaft with a .187-inch mount and supports a 4-way position configuration. https://partsfe.ca/221003-allpoints-dial-2-d-off-250-60