Description: 100% brand new and high quality This is a set of 2 roll trees. These string holders are of the type with small rollers on them to help stay in line and prevent the strings from breaking. They are also equipped with 2 mounting screws. A great replacement for a broken, dirty or old retainer. You sure look great on your guitar! Pair of roller style guitar string handles. The rollers on them can reduce stress on the strings, allowing the guitar to stay in tune longer. They can also prevent the strings from wearing out, resulting in a longer string life. Compatible with electric guitar and bass. Base Size (L x W): Approx. 0.43" x 0.23" / 11 x 6 mmOverall Height: Approx. 0.47 inch/12 mm (Including Rollers)Roll Size (L x D): Approx. 0.4 x 0.2 inch/10 x 5mmThrust Spread (Center to Center): Approx. 0.27 inch/7mm Material: Zinc AlloyColor: Silver, Gold, BlackPackage Included:Pair of Guitar String Handles2 x Mounting Screws