The Gotoh SD 91 6R tuning machine in nickel is a high-quality vintage style tuner specifically designed for guitars. With a slotted shaft and a small wing, it offers user-friendly handling and precise tuning control. The tuner has a shaft spacing of 23.8 mm and an overall length of 152 mm, making it an ideal choice for various guitar models. The 1:15 gear ratio allows for fine tuning of the strings, which is beneficial for musicians who value accuracy. The silver color group gives the tuner an elegant and timeless appearance that harmoniously integrates into the overall look of the guitar. This tuner is not only functional but also aesthetically pleasing, contributing to the overall quality of the instrument.