KAISH Jazz Bass J Bass Pickguard fits USA/Mexican 4 String Fender Jazz Bass Purple 3 Ply This Pickguard fits USA/Mexican Fender Standard Jazz Bass,but not Fender Squier Jazz Bass or other types of Jazz Basses.If you have other types of J Bass,you may need to make a little modification to let it fit Pickguard is made of plastic,it has plastic films which should be peeled off after installing Thickness is about 2.2mm (+/- 0.2mm error, because different bulks materials might be varied a little different thickness) Due to the wide variety of pickguards in the market,please be sure to verify the dimensions carefully before you order the item Free pickguard mounting screws are included