Made of high quality material, durable and anti-corrosion, rust-proof. The diameters of the two ports are different for you to easy use. Wrench for tight shut-off valves,Turns hard-to-reach angle stops without marring chrome. The one tool for common faucet installations. It can tighting strainer nut, make fitting and remove taps easy. Fits almost all available monoblock bolts , double ended Tap back nut box spanner., Manufacturer: DUANxiaoyanK