The CTS 500K Push/Pull Audio Taper Potentiometer packs two functions in one, the pot works as normal on its own but built in is an independent double pole double throw (DPDT) switch which can be wired to add/remove pickups, coil splitting and tapping, series/parallel switching and phase switching just by pulling up or pushing down on the guitars control knob. The switch soldering terminals are on the side of the pot rather than the bottom which reduces the cavity depth required down to 1". The 500K Ohms resistance gives a brighter tone and traditionally used for humbucking pickups and its logarithmic audio taper is normally used for volume pots so the human ear can hear the volume change more smoothly. The potentiometer features a longer shaft for use with carved top guitars like Gibson Les Pauls, it is made from durable brass and has fine 24 spline mounting for imperial sized knobs. To use knobs with a set screw, simply line up the set screw with the split in the pot shaft and tighten the set screw.