The Rankin Delux TB-15 Knob OFF-ON TB-8 is a rotary control knob used on compatible commercial foodservice equipment to select operating positions. Its OFF-ON marking indicates the two basic settings available through the control, allowing the connected equipment to be switched between inactive and operating states. The knob mounts onto the corresponding control shaft and transfers ma... https://partsfe.com/knob2-14-d-off-on-for-rankin-deluxe-part-tb-15