Air-aspirating foam-making attachment for all 1.0" (25mm) Twister Series nozzles. Flow range of 10, 24, & 40 gpm (37, 90 & 150 l/min) matches that of corresponding 1.0" (25mm) Twister Series nozzle (needed for operation). The MX-FOAMJET is constructed of durable UV stabilized polyethylene and aluminum. Diameter 5.2" (13cm).