Ernie Ball Powerpeg， Battery Powered Peg Winder<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Takes the hassle out of changing strings </span></li><li><span class="a-list-item"> Up to 70 % faster than a manual winder </span></li><li><span class="a-list-item"> Engineered peg head fits virtually all tuning machines </span></li><li><span class="a-list-item"> Works on all electric， bass， and acoustic instruments </span></li><li><span class="a-list-item"> Forward and reverse capabilities up to 200 rpm </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/419gK3hkvBL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31WNBY5LmFL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31nszO8a2-L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31xOFHTRACL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31GzZ3tOTLL.jpg" noproxy>