Massage jet type balance, prefabricated kit for tiled concrete pools Stainless steel Multi-hole massage jet with injector ring chamber and air valve to add air, incl. mounting and fastening material. To be installed as wall jet for horizontal wide surface massage or as floor jet for a vertical full body massage. Technical specifications: Material of cover : stainless steel ___ 1.4571 Diameter of cover : 160 mm Volume flow : 12 m³/h Massage force : 25 N Massage surface at a distance of 30 cm: 250 cm² Pool type: concrete pools, concrete pools with sealing mass and retrofitting of concrete __pools.