Features: Addresses frustrating tuning issues found on many guitars with a 3+3 headstock configuration. This guitar mod greatly improves the tuning stability of your guitar and it looks fantastic doing it. It attaches to the head of your guitar and corrects the angle of the strings as they pass through the nut. The upgraded guitar rollers insure low friction as the strings are rerouted to the tuning machine heads. Your satisfaction is our priority; and if you have any questions, please to contact our at any time. Specifications: Material: Zinc Alloy Color: As The Picture Shows Style Options: 3 Style are Available as Shown in the Picture. Size: As The Picture Shows Package Includes: 1Pc Guitar String Butler note: Please allow 1-2cm 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!