The faucet is made with SS304 and the water ruler is made by SS304 and Glass; brushed stainless steel finish; more durable. More Safe of food grade material, doesn't affect the taste of water Great Replacement for Berkey Big, Travel, Royal Gravity-fed Water Filter System, and other medium-sized stainless steel water filters. The red floating ball in the sight glass spigot shows the remaining water level in the lower chamber of your gravity-fed water filtration system. The spigot is compatible with the original Travel, Big, Royal, Imperial Water Filter System; and also compatible with other 1.5, 2.25, 3 Gallons Gravity Fed Filter Tank. There is a wrench in the package, which you can use to assemble the spigot easily.