These 1470 style knobs are so cheap because they need help to work correctly.
These are the Davies 1470 clone knobs we otherwise know and love, except . . . the manufacturing went slightly off-spec with this batch. The shaft holes for these knobs measure 6.3mm.
This means that each knob would need a slight drill out to fit nicely on a 1/4" smooth shaft pot.
So why are we selling them? Because they're still useful as knobs with a little extra work, and we would feel bad if they just end up in a landfill. We hate waste!
1470 Davies clone knob
Black or oxblood color
Phenolic knob with indicator
With hex screw
Shaft hole measures 6.3mm (must be drilled out 0.5mm for 1/4" smooth shaft potentiometer)
25.4mm diameter at the base (this measurement does not include the pointer)
28.5mm including the pointer.