SCI RN-99E(6.4mm) RN-99E(6.4mm) Control knob Black, White (Ø x H) 22.9 mm x 12.7 mm 1 pc(s)

Axle mount: 6.4 mm; Factory colour: Black, White; Material: Phenol; Product size (height): 12.7 mm; Product size (Ø): 22.9 mm; Type (misc.): With marking

Price: 1.29 from Conrad Electronic