100% brand new and high quality.Quantity: 1Size : Approx.57(L)x35(bottom dia.)x21(top inner dia.) mmAdapter outer dia.:21.5mm3 X 360 Rotate Swivel Water Saving Aerator Diffuser Faucet Nozzle Filter (NO Retail Box. Packed Safely in Bubble Bag)Humanized design, easy to installMaterials: Cuprum+ABS+Stainless SteelColor: Sliver + BlackIncrease the water pressure: Prevent water flowed, and the air is mixed with water is good,the water feels soft,enhanced water ,cleaning more convenient.360°rotation: Water can easily covers the whole sink,never worry about clean the sink in cold winter.Health, easy to clean: Water bubbler contains filter, can be at ease use.Save energy: Water saving 30%~70% (compared with standard bubbler)