Jacuzzi® Spa SMT Jetback For 2005+ J-200 Series And 2003-2004 Del Sol Series. 3/8 Inch Barbed Check Air x 3/4 Inch Barbed Water. USED IN: SMT Jet Assembly Diagram (2003-2004 Del Sol and 2005+ J-200 Series) Jacuzzi® Spa SMT Jetback 2005 Plus J-200 Series 2003-2004 Del Sol Series