Locking SG381 tuners from Gotoh. These tuners use the Gotoh Magnum Lock Traditional thumbscrew system that combines classic functionality with Gotoh technology. The SG381 features a 16:1 gear ratio and has evolved through improvement without compromise at any stage and comes equipped with a considerable application of high-technology as standard. With the improvement of precision fitting gears and a marvelous touch on playing, they have gained a considerable reputation and are trusted as the No.1 machine head by many musicians all over the world. These come with a Schaller-style head and are perfect for your six-in-a-line setup. Mounting hardware included.