This is for a complete supercharger kit.  Depending on your application you may need a few more or a few less of the parts that are provided.  You'll need to do your own research.  

For sure outside of this kit you'll need wiring connections to make the throttle body work with your setup and you'll need a wiring connection for the intercooler pump.  Also you'll need an air intake to get the air into the throttle body.  The last piece that is certain you will need is some form of heat exchanger along with the appropriate hosing.  

Parts you will receive:
Supercharger with pulley
Throttle body

Intake Manifold
Intake manifold lower support mount

Intercooler pump and mount

Alternator

Alternator mounting bracket with tensioner

Idler pulley

Crank pulley

Belt

Fuel rail with injectors and wiring.

You will get all associated bolts and gaskets.  You may opt for new gaskets but that's up to you.  You may need certain other bolts to make this work on your application.  There are so many applications I can't guess which one you'll have so you will need to do your research.  I would say this kit should get you 95% of the way to being complete as it contains most of the major components.  You can compare this to a ZZP kit + intake manifold which will cost you nearly $1600 and is still short a supercharger and throttle body.  

The last picture is completely for reference and is not the kit you will receive.  These are all reference pictures to give you an idea of what you're getting.  

Shipping will be in 2 boxes and will potentially come either USPS or UPS depending on quickest provider.