Set of Four (4X) Bourns 500K SHORT PushPull split shaft audio taper potentiometers Double Pull Double Throw PushPull Switch allows for coil Splitting, coil Tapping, Phase Inversions and other mods Some of the features of this pot are: 500K Ohms15% Tolerance Audio Taper Double Pole - Double Throw (DPDT), PushPull Switch Solid brass 38 (short shaft) bushing Split, coarse 18-tooth, knurled, 236 diameter shaft Each pot comes with hardware - nut & dress washer Requires 38 diameter mounting hole Note:1 If you are uncertain whether your guitar uses short (38) or long (34) shaft pots, as a general rule this pot will fit most USA-made gibson Les Pauls manufactured before 1977 excluding Les Paul Studios, and will fit historic reissues, but please double check before you order2 Make sure to pinch the tip of the shaft before you try fitting a knob, this will avoid getting knobs stuck before you install the pot If youve ever had that happen 3 Has a coarse spline shaft This means if you are replacing cTS or other pots using a fine spline shaft, you will need to replace the knobs as well as the pots 4 Requires a cavity depth of 105