Jack's Guitarcheology is an official D'Addario dealer.

From D'Addario:

Pro-Winder is a high-quality string winder with a built-in clipper and bridge pin puller. The Pro-Winder is designed to fit virtually all guitars, banjos, ukuleles, and mandolins. Ergonomically designed with durable hardened steel wire cutters, the Pro-Winder string winder is the ultimate all-in-one restringing tool.

• Ergonomically designed string winder, made for efficient and comfortable use.
• High-quality string winder with built-in string cutter and bridge pin puller.
• Bridge pin puller is seamlessly integrated for use with acoustic instruments.
• Works on virtually all guitars, banjos, ukuleles, and mandolins.
• Fits easily in most cases.