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 prevent dust infiltration, while included mounting screws/ferrules ensures do not need tool installation on most guitar models The oversized square knobs provide enhancing grip for smooth adjustments, while the sealed construction ensures long lasting performances even in humid environment Maintain consistent string tension during live performances, studio recordings, or practice with these guitar tuning pegs Ideal for professional musicians, guitar technicians, and enthusiasts seeking tuning hardware replacements or upgrades for their instruments