These are the exact style knobs as used in all Erica Synths DIY Kits.
These knobs are similar to our MXR range but with slightly sharper edges, they fit great on our 6.35mm Alpha Pots.
Large Knob Dimensions: W28mm x H17.5mm
Medium Knob Dimensions: 23.8mm x H15mm
Small Knob Dimensions: W20mm x H12.3mm