The ergonomic design of the D'Addario Pro-Winder makes string changes easier than ever before with it's built-in clippers, bridge pin puller, and peg winder all rolled into one product. The peg winder is also designed to fit on virtually all guitars, banjos, and mandolins, truly making it a must have for every instrument case • Patented, high-quality peg winder with built-in string cutter • Ergonomically designed for efficient and comfortable use • Integrated bridge pin puller for acoustic instruments • Fits virtually all guitars, banjos and mandolins • The ultimate restringing tool - keep one in every case