Bartolini 500K Premium Volume Potentiometer 19mm with Spline Shaft (Pk-1)

Bartolini 500K Premium Pot, 30% Audio Taper, 19mm Body, 6mm Spline Shaft (Passive Humbucker Volume)

500K pots are commonly used for dual humbucker guitars. 30% Audio Taper (30A) is ideal for Passive Volume. It is a little more linear than a standard 15A taper. 15A taper is standard as a compromise so the same value can be used for volume and tone in cost optimized instruments. For maximum performance, a 30A taper is used for volume with a 10A taper used for passive tone.

Standard 19mm "mini" body.

6mm Spline Shaft is the most flexible type because it can be used with a push-on plastic knob or with a sleeve with knobs for 1/4" solid shaft.