The Ernie Ball Pegwinder Select and Pegwinder Select Bass are high-quality precision-molded string winders designed for quick and effortless string changes. Thanks to a universal design and integrated bridge pin puller, the Pegwinder Select is suitable for most electric and acoustic guitars, while the Pegwinder Select Bass was specifically designed for larger tuning keys. Features include a compact, comfortable grip and with the Pegwinder's non-abrasive socket head, you'll never worry about damaging your instrument's tuning keys. This compact pegwinder fits easily in most gig bags and makes a great addition to any musician's tool kit.