RS PRO 21mm Black Potentiometer Knob for 6.35mm Shaft Splined

RS PRO Grub-Screw Knobs with Fitted Caps. This Grub-Screw Knob Potentiometer from our own RS PRO brand is designed to be used for professional equipment to control electrical devices such as volume controls on audio equipment. Features and Benefits. Available in a variety of shaft sizes and materials Available in diameters from 11.6mm to 28mm, with red, black or grey caps. RS PRO. RS PRO is our own brand range and brings you a wide range of high-quality products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards; they ‘re only given the RS PRO seal of approval if we ‘re confident of their exceptional quality.