High QualityHigh-quality craftwork and testing is fine. Material: durable hard acrylic, ABS and steel. Anti-rust, anti-corrosion, high performance of stability and durability. Package Including6 x Guitar Tuning Pegs(3R+3L) for Folk Acoustic Electric Guitar, Tuner Guitar Parts Universal SizeGuitar string tuning Pegs machine head tuners, These guitar tuning pegs are great replacement for the old, broken tuning pegs, fits for almost all acoustic guitars and electric guitars InstructionsJust slip the String through the hole, tighten the Locking Thumb Wheel, and Tune the String (please note the locking thumb wheel can not be pulled out completely). Keep your guitar on tune and easy to tune. These machine heads are for use on your repair job. Stable SoundCan be installed very easily for er, and it can be tuned tight to make your guitar sound stable, for you Features: Universal size guitar tuning pegs head machine tuners, fits for electric or acoustic guitars guitars. Made with high quality Zinc Alloy metal, 6 Pieces (3 for Left + 3 for Right). 3 tuners per side. Includes mounting screws. Specification: Machine heads (3L + 3R) Quality machine heads Material: Quality machine heads, zinc alloy Color: Silver Package Includes: 6 * Tuner Machine Head(3 for Left + 3 for Right)