2pcs Electric String Winder Heads Guitar Chord Change Tool for Guitars Ukulele Banjos Mandolins black

Great for all guitars, ukulele, banjos, and mandolins

Overall size: 2.4×6.5cm/0.94'×2.56'(D×L). Size of black part: 2.4×4.1cm/0.94'×1.61'(D×L). Size of shank: 0.6×2.7cm/0.24'×1.06'(D×L).

Made of premium ABS and metal, these heads will make it easier and quicker when you replace the guitar strings.

They can prevent the strap from slipping down and are nice replacements for the old and broken ones.