Ernie Ball Powerpeg, Battery Powered Peg Winder
Brand: Ernie Ball
Color: Green/Black
Takes the hassle out of changing strings. AA batteries required (best with Polaroid AA batteries)
Up to 70 % 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