Metric size knobs with 18 coarse splines for most Epiphone Les Pauls, they DO not fit some Gibson Les Pauls which use imperial pots with 24 fine splines, please double-check the splines of your pots before ordering Push on fit knobs with Knurled edge; For most Epiphone Les Pauls or any guitars with 5.9mm diameter split shaft pots, may not fit some USA Gibson Les Pauls which have larger diameter pots. Well made quality guitar knobs, not cheap and inferior knobs in the market. Please contact us when you have problem with the item before leaving feedback, we will try our best to serve you as soon as we receive your message. Package includes: Set of 4 Les Paul Guitar Control Knobs.