Kit includes:
2 Deltalite 2512, S2012, Delta Pro12a, Beta 12a or Kappalite 3012HO
2 NSD2005
Biamp option includes Low Pass Filter 500w and protection capacitor
High Pass option includes Low Pass Filter 500w and High Pass filter for full range operation
There are many options. Refer to your plans. Select by the impedance of your cab.  Either 4 or 16 ohms.
Your choice of jack plates
Penn Elcom Chevron Corners
Pet Screen Grill Cloth
PL Glue
All the screws,gasket and wire needed for assembly and speaker mounting
All the hardware and screws are black
Screw complement includes cabinet screws,
socket head cap screws hurricane nuts, flat head and pan head screws for hardware
Instructions for which screws to use in each application
Literally all you need to add is the wood, interior damping and exterior finish.