Tuning Machines

Grover 143 Series Lightweight Bass Guitar Machines. For the ultimate in weight control, Grover offers the 143 series for Bass Guitar. With a plastic housing and aluminum string post, this lightweight bass key is perfect for the player who is concerned about the overall weight of the instrument. The 20:1 gear ratio provides the finest tuning available. Several configurations and are offered, all with a black plastic bass plate and plated button and post. (Includes: four bushings having an outer diameter of 0.66” and internal M19 x 1.0 threading and four washers). 4 Treble, Set of 4

Totally professional in design and performance. Small and lightweight, this precision machine fits guitar headpieces that will not take full size machines. The mini buttons provide more space for players' fingers (even larger fingers) to tune strings. Gear ratio is 14:1. Sealed-in lubrication keeps Mini-Rotomatics perfect for a lifetime! Includes 5/8" washers, bushings and wood screws.

Totally professional in design and performance. Small and lightweight, this precision machine fits guitar headpieces that will not take full size machines. The mini buttons provide more space for players' fingers (even larger fingers) to tune strings. Gear ratio is 14:1. Sealed-in lubrication keeps Mini-Rotomatics perfect for a lifetime! Includes ⅝" washers, bushings and wood screws.

The same innovative engineering and classic design as the Original Locking Rotomatics®, but with smaller buttons for 6-in-line guitars, or for those who prefer a little more space for their fingers. Gear ratio is 18:1. Package of 6