GROVER Professional Mandolin Vintage F Style 409 Series White Button Tuning Machines Nickel

The Grover 409 Series Vintage F Style provide mandolinists with precision tuning for their retro-styled instruments. With an 18:1 gear ratio, you'll achieve the accurate tuning these mandolins demand. The open gears in a vintage worm under configuration and bell-top button screws give these machine heads a classic look while the die-cast plate provides stability. The 25/64" post holes and 30.3 mm overall post length accommodate a variety of mandolin neck widths.