Changing strings just got a whole lot easier, safer and more FUN!. Music Nomad's patent pending GRIP Bit peg winder attaches to any cordless power drill or power screwdriver. Our innovative GRIP Technology smoothly and silently slips over your tuning pegs for a scratch free & clank free operation compared to traditional plastic peg winders. Our contoured design fits virtually all tuning pegs both big and small. It's perfect for electric and acoustic guitar, bass, banjo, mandolin, ukulele and orchestral strings. Using the highest quality materials including a carbon steel shaft. So don't lose it or loan it, you'll look forward to the next time you change your strings. That's Music Nomad quality - raising the bar in equipment care.