Deluxe Sewer 3/8" NPT Jetter Nozzle 4 Piece Set 8.0 GPM 3000 PSI 9.0 Orifice Thruster, Flusher, Degreaser & Roto Spinner Most Popular Kit includes Thruster, Flusher, De-greaser and Spinner Nozzles Thread Size: 3/8" NPT-F 3/8" NPT 3000 PSI 9.0 Orifice