The bubbler head is made from a brass forging. It is polished and copper, nickel and chrome plated. The bubbler comes with a brass flange that is copper, nickel and chrome plated (included with item numbers 0360 & 0361). The 1/2-14 NSPM shank is yellow brass (included with item number 0360). The push button control is provided with a replaceable cartridge. The flow rate through the bubbler is internally adjustable.