Reloop Fader Cap Set - Blue – Thomann United States
iCon Metal Fader Cap (Set of 9)
Reloop Fader Cap Set - Yellow – Thomann United States
Clear Fader Caps for Eurorack Modules – WMD
Chroma Caps
Behringer | Product | X32 Fader Knobs
10pcs Color Mixer Fader Cap Straight Slide Potentiometer Fader Button / Playing Discs Knob Cap 4mm Hole Audio Adjustment Cap - Switch Caps - AliExpress
100pcs For Yamaha behringer Soundcraft Mixer Fader Cap / Potentiometer Knob Push Cap / Straight Slide Cap 4MM 24x11x10mm|Switch Caps| - AliExpress