This is for 1 Pro nitrous and 1 PRO fuel solenoid. 

1 - PRO NITROUS Solenoid 

1/4"npt inlet - side port, 1/8"npt outlet - side port with a .125 orifice. This Pro NITROUS solenoid will support up to 400hp in nitrous delivery for any nitrous application. The solenoid only draws approx. 12 amps

and 

1 - PRO FUEL Solenoid

1/4"npt inlet - side port, 1/8"npt outlet - side port with a .250 orifice. This Pro FUEL solenoid will support up to 400hp in nitrous delivery for any nitrous application. The solenoid only draws approx. 6 amps