All Parts TK-7900 Grover 102-18 Series 3x3 Rotomatic Tuners - Nickel Flatwound Bass Strings Among the effect modes are

Among the effect modes are Harmony

There is wear on the outer wrap but everything works as it should

ensuring true sounding

you can press ON and TAP footswitch to quit SOS mode

All Parts TK-7900 Grover 102-18 Series 3x3 Rotomatic Tuners - Nickel Flatwound Bass Strings Among the effect modes areThe original Rotomatics with an improved higher ratio gearing. The 18: 1 ratio provides for finer tuning and greater stability. The finer gears provide smoother tuning and a higher degree of backlash elimination. This new version of the Rotomatics uses the exact housing as the original. Only the gearing has changed. Includes washers, bushings, and wood screws.