Using this Fender string winder is a breeze. First, if you're using the winder by hand, just place it on the tuning peg of your instrument and turn it to wind or unwind the string. If you want to speed things up, detach the winder and attach it to an electric drill. When changing strings on an acoustic guitar, use the built - in bridge pin puller to remove the bridge pins gently. As for the bass, simply use the winder as you would with other stringed instruments. Remember to keep the winder clean and dry after each use. Avoid dropping it as it might damage the internal mechanism. With proper care, this string winder will serve you well for a long time.