Dave's answer is correct. Basically, the pickup and everything you need EXCEPT the 13-pin cable and synth (and guitar). I recommend that you initially attach with the sticky tape that comes in the box (using their shims if you need to adjust height) but then once you get it set up so that it tracks well, drill holes for the screws (they provide screws but not drill). Don't rely on the tape alone. The tape loosens up if you play an outdoor gig on a hot and humid day!!! So use the screws they provide.