... alloy handle, ceramic cartridge 2. OEM service available. kitchen faucet mixer*brass body,ceramic cartridge,zinc alloy handle*OEM service*5 ... 7-8um, Ni 4-8um,cr: 0.25um Noise level:19 db(a) at 3 bar with filter Flux of hydraulic ... 1 year free warranty ,3 years quality assurance kitchen faucet mixer