Fits Wilkinson VS-100 bridges. String spacing is determined by the bridge, not the saddles.
This is a set of six saddles. They come with intonation screws, but without lock-down screws.
You will also need to order the Acoustic-Phonic or the Hexpander MIDI Interface to complete your ghost system. Pickups are different for every type of guitar bridge, so they are always ordered separately from the modules.