The Star Mfg 2R-Z6850 Bun Warmer Knob 1-3/4" - 0.250 provides precise, intuitive control for compatible commercial bun warming equipment, and operators manage heat settings with confidence and consistency. Designed to interface with the warmer’s control shaft, the knob translates manual rotation into corresponding adjustments of the connected temperature or heat-control mechanism. https://partsfe.com/1-34-250-keyed-knob-for-star-part-2r-z6850