A black control knob that fits ¼in. 'D'-shafted controls. * Fits ¼in. 'D' shafts * Height (with cap) 19.2mm * Max. diameter 19.3mm Note: Knobs are supplied without caps. https://elecena.pl/product/27261169/cliff-cl178886-k21-control-knob-black-1-4-quot-d-shaft 2024-11-13 https://elecena.pl/product/27261169/cliff-cl178886-k21-control-knob-black-1-4-quot-d-shaft 2026-07-15