Optimal Performance: Upgrade your guitar with our set of 6R vintage-style tuning pegs designed for precision and durability Crafted from high-quality materials, these tuning keys resist wear and tear, making them ideal for both daily use and touring conditions Easy Installation: Suitable for most guitars, these tuners are easy to install these machine heads are an essential accessory for any guitarist looking to maintain perfect pitch and smooth tuning Applicable scope: FD Vintage series electric guitar, the headstock hole diameter must be 8.1MM and less than 9MM, otherwise it cannot be used Color: Silver Material: Metal Package Contents: 6 * guitar heads (right) 6 * nuts 8 * screws Only 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.