Unlike ordinary peg winders, the patented Pro-Winder is a high-quality peg winder with a built-in clipper, bridge pin puller and string stretcher. The Pro-Winder is designed to fit virtually all guitars, banjos, and mandolins. Ergonomically designed with durable hardened steel wire cutters, the Pro-Winder is the ultimate all-in-one restringing tool. Keep one in every case!