All-Metal Body for Maximum Durability, Easy DIY QuickDock Top Mount Installation, Codes/Standards Applicable: cUPC (UPC&CSA), NSF 61, NSF 372, AB1953, EPA, CALGreen, MASS, FTC, DOE, CEC and ADA, High Performance / Low Flow Neoperl Aerator w/ Easy-Clean Rubber Nozzles to Prevent Hard Water Build-Up, Kerox Ceramic Cartridge (tested w/ 500,000 cycles)