A nicely molded PRESLOTTED nut that should fit most any import-spec bolt-on guitar out there. 43mm 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. The Ivory colored Polycarbonate material is a nice upgrade for the white shiny plastic found on many imports. 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.