Two Bourns 500K push/pullaudio taper, long shaft (3/4" bushing) SPLIT 18-tooth coarse knurled shaft potentiometer. This pot allows you to do wiring modifications to your guitar without having to modify the body of the guitar. Used for coil splitting, coil tapping and phase shifting. This a short shaft pot (threaded bushing is 3/8" tall & 3/8" diameter, shaft is 1/4"diameter). Pot is manufactured by Bourns. Note: 1. Requires 3/8" diameter mounting hole 2. If you have an import guitar it is probably using metric sized components and these pots cannot be used without modifying the openings on your guitar.