Check the listing for details. Tuning Machine Custom Shop Guitar 3+3 Gold 080207GD. Color: Gold, Condition: New. Listed at 46.99 USD. BITTERROOT CUSTOM SHOP TUNING MACHINES 3 PLUS 3 SET FOR GUITAR GOLD FINISH Bitterroot Custom Shop Brand Guitar Tuning Machines. Our custom shop tuners are used on our custom build guitars. These are an excellent quality tuner at a very reasonable price. 3 Right Hand and 3 Left Hand Configuration. Works for many guitar types. 3 Plus 3 Setup. Very nice, custom shop style tuners. Solid feel, very clean operation, high quality. Specifications: 16 to 1 gear ratio, sealed Gold tuners with Gold Knobs. Knob Size is 19.2mm (11/16") Mounting Hole size is 10mm (25/64") Body Size 15.9mm (9/16") Hex nut for mounting bolt 10mm (25/64") Polished Gold knob is screw replaceable type. Kit includes: 3 Right Hand and 3 Left Hand Tuning Machines with Nuts and Washers, 6 mounting screws. Note: (Use #50 drill to seat mounting screws)