Air-aspirating foam-making attachment for all 1.5" (38mm) Twister Series nozzles. Flow range of 20, 60, & 95 gpm (75, 230, & 360 l/min) matches that of corresponding 1.5" (38mm) Twister Series nozzle (needed for operation). The MX-FOAMJET is constructed of durable UV stabilized polyethylene and aluminum. Diameter 7.4" (18.8 cm).