Kluson Revolution 19:1 'Gibson' mount Locking tuners in Nickel with Pearloid Keystone buttons, Vintage style KEDPL-3801N | Drop-in upgrade for instruments with Gibson style 2 hole mount and modern 25/64" or 10 mm) peghead hole. These normally use a screw in hex head bushing rather than a press in bushing. | Introducing the NEW Kluson Revolution G-mount 19:1 high ratio tuning machine. Kluson has truly introduced a game changer with the traditional footprint and newly designed sealed die-cast housing. These state of the art tuners are designed to directly retrofit tuners with a screw-in hex head bushing, traditional Kluson two-screw mounting pattern and modern 25/64" peghole. The vintage outline, pearloid keystone button and pin-stripes pay tribute to Kluson heritage while adding a rear knob locking | SportHiTech are authorized Kluson dealers, and all products are factory-fresh and carry full manufacturer warranty, and are shipped in original retail packaging.