Fits most Asia made guitar bass pots like Alpha pots, after 2000's Epiphone Les Paul/SG/ES and almost all Ibanez/ESP/Cort guitars which made in Japan, Korea, China and Indonesia | This knob will NOT fit imperial inch Size pots like CTS/Fender/Dimarzio/Burns pots, you can find our imperial inch Size knobs for them | 18 coarse splines, 6.0mm inner diameter, numbers 0-10. Bell-shaped volume and tone knobs with metal top | Correct color, shape and font, it will dress your guitar/bass right | Made of acrylic, Set of 4 (2 Volume, 2 Tone knobs)