The Ernie Ball Power Peg is the first of its kind self-contained motorized peg winder that allows you to restring your instrument up to 70 percent faster than traditional manual peg winders. Forward and reverse capabilities up to 200 rpm. The Power Peg is powered by 4 AA batteries (not included) featuring a proprietary universal peghead that fits virtually all bass, acoustic and electric guitar tuning machines.

Features:
• Takes the hassle out of changing strings
• Up to 70 percent faster than a manual winder
• Engineered peg head fits virtually all tuning machines
• Works on all electric, bass and acoustic instruments
• Forward and reverse capabilities up to 200 rpm