1、Made of premium copper-zinc alloy, it is quite durable and song. 2、It is installed on the head of the guitar, pressing the sings, guiding the sings to go in the right direction. 3、Comes with 2 sing retainers and 2 screws, easy to use and install. 4、They are designed to replace the old or damaged sing ee retainers of elecic guitars. 5、Perfect and necessary insument replacement parts for elecic guitars. Features:o:p/o:p Made of premium copper-zinc alloy, it is quite durable and song. It is installed on the head of the guitar, pressing the sings, guiding the sings to go in the right direction. Comes with 2 sing retainers and 2 screws, easy to use and install. They are designed to replace the old or damaged sing ee retainers of elecic guitars. Perfect and necessary insument replacement parts for elecic guitars. o:p/o:p o:p/o:p o:p/o:p o:p/o:p Specifications:o:p/o:p Condition: Brand Newo:p/o:p Material: Copper-zinc Alloyo:p/o:p Weight: Approx. 3g / 0.1ozo:p/o:p Size: Approx. 10mm / 0.4in(Retainer Diameter), 6.5mm / 0.3in(RetainerSing Spacing), 5&7.8mm / 0.2&0.3in(Retainer Length), 12&16mm / 0.5&0.6in(Screw Length) o:p/o:p Optional Color: Gold, Silver, Blacko:p/o:p Package list: o:p/o:p 1 * 7.8mmSing ee Retainero:p/o:p 1 * 5mm Sing ee Retainero:p/o:p 1 * 16mm Screwo:p/o:p 1 * 12mm Screwo:p/o:p