Description: and high This is a 2 roller string trees. These string retainers are the type with the little rollers on to help stay in tune and help prevent strings from breaking. They come with 2 mounting screws as . Great replacement for your broken, dirty or old string retainer. to look great on your guitar A pair of roller style guitar string retainers. The rollers on can lessen the stress on your strings, which allows the guitar to stay in tune .They also can prevent wear and tear on the strings, which results in string life.Compatible with electric guitar and .Base Size (L x W): . 0.43 x 0.23 inch / 11 x 6mm Height: . 0.47 inch / 12mm (including the roller)Roller Size (L x D): . 0.4 x 0.2 inch / 10 x 5mmString Spread ( to ): . 0.27 inch / 7mmMaterial: Metalcolour: BlackPackage Contents:2 x guitar string retainers(with screws)1 x Guitar boat socketOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.