6pcs quality chrome locking machine heads for electric guitar or acoustic guitar.High quality zinc alloy material, equipped with screws, bushings and ferrules for easy installation and removeThe fully enclosed locking tuner provides maximum tuning stability, keeping your guitar in tune,Great replacement for the , broken tuning pegs.Type:GC401OLocation: 6 LeftHead size is 17.5mm(0.69in) width.color:As shownMaterial:Zinc alloysize:3.9 x 2.2 x 2.2cmPackage Contents:6 x Left Guitar Machine Heads6 x Ferrules6 x Screws6 x Threaded bushingsOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.