These tuners are globally recognized as top-quality and recommended for Gibson Les Paul, SG, ES, and any instrument requiring this configuration. Model: SG381 MG AB07. It features a 16:1 gear ratio and a 20mm post length.- They have evolved through continuous improvement and come equipped with high technology as standard, ensuring superior performance. Known for precision-fitting gears and a smooth playing experience, they are trusted as the No.1 machine heads by many musicians worldwide. Tuner configuration: 3 per side, with a metal keystone head. Finish: Gold. Hardware included: bushing, washers, and screws.