Mini Locking Rotomatic Tuners (406 SERIES) are built with the same innovative engineering and classic design as the original Rotomatics, but with smaller buttons for those who prefer a little more space for their fingers. Simply insert the string through the string hole, pull to tension by hand and begin tuning. As you start to tune, only the locking cam in the string post turns. Once the string is locked, the string post begins to turn allowing you to bring the string to pitch. In less than one revolution of the string post, you will be in tune, to stay in tune.
Gear ratio is 18 to 1.

Grover tuners are known and trusted as the finest available. Should your guitar tuners ever fail, for any reason, simply return them to Grover for a fast and friendly no charge repair or replacement.

Orders to AK, PR, HI and all other states not in the 48 contiguous states require additional shipping. Please contact us for a quote.