Ernie Ball Power Peg Stringwinder
 
The Ernie Ball Power Peg is the first of its kind self-contained motorized pegwinder that allows you to restring your instrument up to 70% faster than traditional manual pegwinders. The Power Peg is powered by 4 AA batteries (not included) featuring a proprietary universal peg head that fits virtually all bass, acoustic, and electric guitar tuning machines.