Grover mandolin tuners feature new engraved die-cast baseplates, plus 18:1 gear ratio. These are complete sets of 4-left/4-right tuners on two baseplates, with equal-length knob shafts and removable pearloid plastic knobs.
Standard 29/32" (23mm) string post spacing; screws and knurled press-fit bushings included. 11/32"-diameter (8.73mm) pegholes required.
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To be sure these tuners fit your instrument, compare your existing machines and peghole dimensions to our listed specs to help determine the best replacement.