This is a chrome roller string tree. The string retainer is the type with the little roller on it to help stay in tune and help prevent strings from breaking. It comes with 1 mounting screw as well. Great placement for your broken, dirty or old string retainer. Sure to look great on your guitar!<br><br>Features:<br>A roller style guitar string retainer.<br>The roller on it can lessen the stress on your strings, which allows the guitar to stay in tune longer.<br>It also can prevent wearing and tearing on the strings, which results in longer string life.<br>Compatible with electric guitar and bass.<br><br>Specifications:<br>Material: Zinc alloy<br>Color: Chrome<br>Base Size: 1.1 * 0.6cm / 0.43 * 0.23in (L * W)<br>Total Height: Approx. 1.2cm / 0.47in (including the roller)<br>Roller Size: 1 * 0.5cm / 0.4 * 0.2in (L * D)<br>String Spread(Center to Center): Approx. 0.7cm / 0.27in<br>Item Weight: 4g / 0.14oz<br><br>Package List:<br>1 * Guitar string retainer<br>1 * Mounting screw