1.These pots are widely used guitar tone and volume controls, 25K pots are for controlling the volume or tone of active pickups, or for use after the preamp of a piezo-saddle transducer bridge.Metric sized pots mostly use in import guitar or Asia made guitar
2.6mm knurled split shaft fits a coarse-knurled (18-spline) knob. It will fit modern Squier/Epiphone/ibanez/ESP etc made in China/Korea/Japan guitar's stock knobs
3.Metric sized M8 thread, 8mm diameter; Threaded portion height 10mm(3/8"); brass thread, aluminum shaft ;24mm( 15/16")diameter full sized base. Standard solid construction
4.Linear taper with standard ±20% resistance tolerance
5.Package includes 2pcs potentiometers, nuts and washers