Astralpool Multiflow swimming pool suction nozzle for cementing with grid to the pipe diam. 50 mm PN 10. Manufactured in white ABS. East fillet 2 "in diameter and int. 50 for reinforced concrete. The multi-flow system consists of a pre-marked sphere of different diameters 14, 20 and 25 mm, which allows the possibility to select one of the diameters at the time of installation, thus succeeding in get different courses.