This was the name given to a series of vibrato tailpieces that Gibson produced under the Maestro trade name. They appeared mostly on ES-335-type guitars, as well as the SG series. The Maestro Vibrola worked in the same manner as a Bigsby and was used primarily as a cost-cutting feature, as the company had to buy Bigsbys. The Vibrolas didn’t hold up well under exceptionally heavy use, though they can be visually appealing. For authenticity in its reissue series, Gibson has put the Vibrola back into production.