Upgrade your acoustic or electric guitar with sealed guitar tuner pegs, crafted from metal for precise ratio tuning stability and corrosions resistant finish. These machine head feature internal sealed gears to infiltration, while included mounting screws/ferrules ensures do not need tool installation on most guitar models. Ideal for professional musicians, guitar technicians, and enthusiasts seeking tuning hardware replacements or upgrades for their instruments. Maintain consistent string tension during live performances, studio recordings, or practice with these guitar tuning pegs. Package includes: 1 Set Metal Guitar String Knobs