Two natural bone nuts for 1 7/8 inch (47.6mm) guitars. This nut is for our standard neck guitar models that do not have an “N” at the end of the product name. Including, but not limited to: OC660M,OC660B1M etc. For Journey Instruments guitars, “N” denotes “narrow string spacing, which is 1 7/8” or 47.6mm, and these guitars are NOT compatible with this nut. This is for use with non “N” model Journey Instruments guitars. Please note you will likely need to sand down this nut to get proper string height as each guitar is a little different. Nut height :8.5mm