1. Solved a frustrating tuning issue found on many guitars with a 3+3 headstock configuration. 2. The Guitar Tuner is installed on the headstock of the guitar and corrects the angle of the strings as they pass through the nut. 3. This guitar mod greatly improves the tuning stability of your guitar and looks great 4. This durable full metal chrome guitar accessory is ready to provide you with long and trouble-free service. 5. The rollers used in this guitar upgrade low friction when the strings are rerouted to the tuning head. Colour:Silver Material:Metal Package Contents: 1 x electric Guitar Tuner 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.