Features: 1.Using these guitar tuning buttons, you can tune your guitar quickly and accurately 2.High?quality internal gears effectively prevent the screws from slipping and falling 3.The knob is ergonomic and has a concave design. This guitar tuning is not easy to loosen. 4.These guitar tuning nails have high?quality craftsmanship and high sound quality through many tests. 5.These guitar tuning nails are ideal replacements for old and bad tuning nails. specification:Item Type: Guitar Tuning Pegs Color: Chrome-Plated silver button body, black wood grain handle. Material: Plastic large oval handle + A3 steel plate + free-cutting iron string + brass material gear combination. Use: Electric acoustic guitar of appropriate size Optional Style: Semicircle, Oval PackageList:6 x r6 x Screw