The PP4-NT Punch Pro is a 1" high efficiency horn tweeter with integral 6dB high Pass crossover engineered for high SPL (Sound Pressure Level) conditions ^^ Featuring a neodymium motor structure, high power diaphragm, combined with a billet machined aluminum phase plug, creating a highly sensitive speaker that is built for high output at extreme volume ^^ Pro series 4 Ohm 1" tweeter with power handling of 50 Watt RMS/100 Watt Max power and requires a mounting depth of 2.52" (64 mm) Large Trim Ring / 1.79" ( 45.5 mm) Small Trim Ring ^^ The PP4-NT is sold as an individual unit (not in pairs) and includes mounting hardware ^^ Famous Rockford Fosgate build quality with a full 1-year warranty