A nicely molded PRESLOTTED nut that should fit most any import-spec bolt-on guitar out there. 42mm wide and 3.5mm thick. These are flat-bottomed to fit most imports- and of course you can simply file the correct radius into the bottom to fit on any USA spec guitar. This nut is molded from low friction polycarbonate and offers great tuning stability. As with ANY guitar nut a substantial amount of hand fitting is often required, and even though the slots are molded you will need to hand-file the slots to meet your particular playing requirements.