Cliff FC7230 Kmr-15 Knob Blk Md 6mm Spl-18T

Axle mount: 6 mm; Factory colour: Black; Material: Plastic, Aluminium; Product size (height): 16 mm; Product size (Ø): 15 mm; Type (misc.): Axis, corrugated

Price: £ 2.79 from Conrad Electronic