An R-Tech control knob / button in grey, compatible with PCB mounting push button switches with 3.3mm square shafts. * Type: Actuator knob * Shape: Round with concave end * Colour: Grey * Dimensions: 8.15 x 8.8 mm * Shaft size: Fits 3.3 x 3.3 mm shaft * Sold as single items https://elecena.pl/product/27201072/r-tech-780388-control-knob-button-for-pcb-mount-switches-in-grey 2024-11-09 https://elecena.pl/product/27201072/r-tech-780388-control-knob-button-for-pcb-mount-switches-in-grey 2024-12-02