Features: Good Quality: Guitar string tuning pegs made from quality alloy. Decorate with twills, with heavy duty internal gear. Adjustable: Guitar machine heads knobs with heavy duty internal gear can be tuned tight to make your guitar sound stable, perfect for you. Easy to Install: Comes screw accessories for easy mounting. And the tuned guitar string does not loosen easily. Perfect For: Guitar tuning machine head, sturdy and convenient. Easy to replace your old or dirty guitar tuning pegs. Wide Use: Universal size machine head tuners fits for almost all acoustic guitars and electric guitars. Specifications: Material: Alloy Color: As The Picture Shows Package Weight: approx.190g Center Hole Spacing: approx.25mm/0.98in Bottom Plate Total Length: approx.110mm/4.33in Package Includes: 1 Set of Guitar Machine Heads note: Please allow 1-3mm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!