Bigger Size: The gas stove knob covers with a universal size that fit the knobs of most modern appliances. The distance from the center of one knob to the center of the next knob should be 3″(≥77mm) or more. The height of the gas knob should be less than 2″(≤50mm). The knob inner diameter (the bottom middle part of the knobs) should less than 1.26″(