The D'Addario/D'Addario Accessories Ergonomic Bass Peg Winder with built-in string stretcher is precision molded with a solid body and overmolded with soft comfort grips. Its specially designed winder fits virtually all vintage and modern bass tuners. The handle is ergonomically designed to better fit your hand, plus it has an integrated string stretcher, which makes tuning your bass easier than ever before. It is perfect for the procrastinating player who is prone to last minute pre gig string changing!