Mentor 4132.603 4132.603 Control knob Black (Ø x H) 20 mm x 16 mm 1 pc(s)

Axle mount: 6 mm; Compatible with (details): Series 20; Factory colour: Black; Product size (height): 16 mm; Product size (Ø): 20 mm; Type (misc.): Knob Series 20

Price: 2.99 from Conrad Electronic