Our patented fine tuners are machined in our shop, and offer the smoothest action of any autoharp fine tuner. Besides making tuning your instrument effortless, changing a string is faster and easier than others. They are of black anodized aluminum, so the weight is kept to a minimum. Can be made for 36 or 37 string autoharps. Comes with wood bridge (maple or walnut) and fine tuning wrench as well as instructions on our fine tuners.