Universal rotary knob with a set screw. The knob will fit over a shaft size of 1/4″ or less. The knob will include a set screw to tighten the surface of the shaft. The knob is rubber with a plastic insert, with a chrome ring. This knob is a great way to make all the knobs in a car match the A/C. They can be used for choke cables, defrost cables, heater control valve cables, or any other rotary control.
The knob is about 15/16″ in diameter.