Modern style Epiphone® Les Paul® tuning machines use a 10mm headstock hole. These machines have one mount screw and a nut on the front that you need to unscrew with a 10mm hex wrench. For these style tuning machines, the Guitar Tuner Upgrade Kit (3+3 Headstocks) will be a direct fit
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Many Epiphone® Les Pauls® come with vintage style tuning machines. These tuners are held in by 2 mount screws each. They also have a press in bushing on the font that needs to be tapped out. The Vintage Guitar Tuner Upgrade Kit (3+3 Headstocks) is a direct fit.