All Faber® Bridges, regardless of model, have Pre Notched saddles installed at the factory. These are simply “starter” notches, dead center. In many cases nothing needs to be done to these notches prior to installation on your guitar. For the plain strings, the starter notches are always adequate. In some cases, you may want to widen the notches for the wound strings. A small file can accomplish this task easily, just widening enough so that the string can rest a little deeper into the notch. However, for best results, your saddles should be notched for your preferred string gauge.