This is the new locking version of the metric Tuneomatic bridge that secures solidly to your guitar and won"t come loose or fall off when the strings are off. This TonePros System II bridge is the same one that you will find installed on the top new guitars direct from the factory and will look identical to your stock piece because it"s made from the actual OEM bridge used on your guitar. However, the new version locks in solidly creating perfect intonation and singing sustain. You won"t believe the difference, and you will never go back!This model fits your Epiphone Les Paul, SG, 335, as well as most other guitars with large posts and metric threads.Important dimensions-Bridge stud diameter - 6 mm, slotted topbridge center to center spacing - 2.95"saddle spacing - 10.4mm