Check the listing for details. Kluson 3 Per Side Revolution Series G-Mount Non-Collared Tuning Machines Nick.... Condition: New. Listed at 63.84 USD. Kluson® 3 Per Side Revolution Series G-Mount Non-Collared Tuning MachinesThe Kluson® Revolution 19:1 high ratio G-Mount tuning machine. Kluson® has truly introduced a game changer with the traditional footprint and newly designed sealed diecast housing. These state of the art tuning machines are designed to directly retrofit vintage tuning machines with a push-in bushing, traditional Kluson® two-screw mounting pattern and vintage 11/32 inch peghole.The vintage outline, metal keystone button and pin-stripes pay tribute to Kluson® heritage while the brand new housing appearance incorporates all the features the modern guitarist demands. High gear ratio guarantees silky smooth operation, fine tuning stability with no backlash, all in a sealed one-piece housing! All mounting hardware is included.