3L3R Butterbean acoustic guitar mechanics, in Nickel, 21,7x6mm, Solid Shaft, 1: 18 Ratio, 25g (each). Included in the package 12 screws for assembly and 6 blocking nuts. The avant-gardistic Velvet technology-TEC present in the new Schaller GrandTune provides a perfect combination of elegant design and a velvety feeling to the touch. The GrandTune mechanics offer a precision and a second one to anyone and the absence of synthetic coatings makes them perfectly resonant. With their anti-architecture-Wear, GrandTune are destined to last and glimpse over time! Try Velvet technology-TEC and find out why the quality of the sound, the stability in the intonation have brought them to be considered the best mechanics in the world.