Features: The guitar machine head tuner has a sturdy metal body ensuring excellent durability and practicality. Feature skull head design, adding a cool aesthetic to your guitar and showcasing your unique. Suitable for most electric and acoustic guitars, It will fit standard 13/32 inch (10mm) peg holes. Improving the tone quality of strings, enhancing your playing experience. With these Tunings pegs, you can tune guitar strings fast and accurately. Specifications: Material: Metal Size: As shown in the picture Package Includes: 6pcs Guitar Tuning Pegs(6R) 6pcs Ferrules 6pcs Nuts 6pcs Screws note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.