This product has metal construction, rust protection, corrosion resistance, provides high stability and durability.complete set with 3 left and 3 right tuners and other fixing accessories easy to install.Comes with screws, bushings and ferrules for easy assembly, you can tune guitar strings quickly and accurately.You can tune guitar strings quickly and accurately, the universal size of string tuner is suitable for electric and acoustic guitars.This product is an ideal replacement part for your folk guitar, if you are a hobbyist guitar string makes the perfect gift.<br> <br> The guitar string is an essential item for a guitarist.<br> <br> One size tuner for all electric and acoustic guitars.<br> <br> This product is an ideal replacement part for r your folk guitar, if you are a guitar lover, this is the perfect gift.<br> <br> <br> Specification:<br> Material: Zinc Alloy<br> <br> Color: Silver<br> <br> <br> Package Included:6 x Guitar Machine Heads