solid lever single hole mounted flow rate 3.8 ltr/min (1 gpm) ball joint aerator M24 x 1 ceramic cartridge with hot water safety device 35 mm pop up waste 1 1/4 inch flexible high pressure supply tubes 1/2 inch rapid installation set in accordance to EN 817 Pressure Compensating Aerator 3.78 ltr/min (1 gpm)