Sifam 21.5mm Black Potentiometer Knob for 6.35mm Shaft Splined, S211 250BK

Matt Finish Collet Knobs (Style 1). From Sifam, this selection of matt finish collet knobs are functional and simplistic. Compatible with various push-fit accessories, such as dial skirts and nut covers, this range of collet knobs are as versatile as they are practical. Features and Benefits:. Four diameters of collet knobs with a variety of collet sizes for different pot shafts etc The 21mm and 29mm versions incorporate an 8mm AF tightening nut and a recess in the base which will accommodate the control mounting nut The 11mm and 15mm versions incorporate round nuts with slots Fixing tools are available separately for tightening the collets, they do not have sufficient size to cover the control mounting nut and separate nut covers are available