36Pcs Yootones 4mm Guitar Tuning Gears Hexagonal Guitar Shafts Gears Machine Head Gear Compatible with Classical Guitar (Gold)

["The guitar tuning gears compatible with most string instruments such us classical guitar.","The guitar tuning gears are made of high quality metal material, sturdy and durable, ensure a long time use.","These tuning peg gears can effectively prevent screw slippage.","The smooth head so that will not damage the fingerboard when it is working.","Ideal to replace your old and dirty tuning pegs and great for guitar tuning."]