The D'Addario Drill Bit Peg Winder attaches to any cordless screwdriver for faster and easier string changes. Built from a high performance polymer, the peg winder can accommodate vintage to modern guitar and bass tuners in a one size fits all design while the nickel-plated steel shaft will resist wear for countless string changes. Attaches to any cordless Screw driver Allows for faster and easier string changes Accommodates vintage to modern guitar and bass tuners in a one size fits all design Nickel-plated steel shaft will resist wear for countless string changes