Alpha Potentiometer A250K Concentric Stacked Pot Quantity:Single Screw holes measure 60mm at

Screw holes measure 60mm at center (30mm outside screw to middle screw)

Check out the spec pic for measurements

The knurl on these concentric knobs match our black nickel Pomona Dome Knob

You can go pretty much BANANAS with wiring options with one of these

Alpha Potentiometer A250K Concentric Stacked Pot Quantity:Single Screw holes measure 60mm atA250K Concentric Stacked Potentiometer 6mm diameter top radial control shaft, 8mm diameter bottom Radial control shafts area combined 20mm long (tall) from top of threaded bushing Threaded bushing is 8. 8mm diameter x 9. 3mm long (tall) Pot barrel housing is 14mm x 13mm x 16. 8mm Overall length is 44mm (tall) Smooth control with NO center detent. This is an A audio (logarithmic) taper pot. This design is far more compact and lower profile than a dime