This is an MF-A05 Potentiometer Knob Cap of 6mm it easily fits with WTH118 / WX050, Rotary switches used in various electronic devices. The knob makes it very easy to rotate and vary the switch rotation.
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Features:
Easy and smooth rotation.
Fast and accurate adjustment.
Shock-proof protection.
Specification:
Shaft Diameter(?): 6mm
Inner Diameter(A): 34 mm
Outer Diameter(D) : 44.6 mm
Height (H): 20 mm
Material: Bakelite