8Pcs Yootones Bass Guitar String Trees String Retainer Guides with Mounting Screws Compatible with Bass Guitar Parts (Silver)

["Guitar string tree retainer,Bass string tree retainer is compatible with fender jazz bass precision bass guitar.","Guitar string tree retainer,Bass string tree retainer is made of high-quality metal, strong and durable. Easy to use.","Color: Silver, Black(Optional);Size:Top Diameter: 18.2mm, Height: 9.8mm.","Easy to install.Great replacement for your broken, dirty or old string retainer.","Retain the string perfectly and reduce the string friction to save string, and guarantee more accurate."]