This Set Includes 2 Durable Rustproof 1/2 Inch Brass Water Tank Fittings With A 4.2Cm Outlet. Each Fitting Features A 1/2 Inch Tap Outlet And Comes With 2 White Silicone Seals For A Secure Connection. These Fittings Are Ideal For Various Water Storage Solutions Including Water Towers Diy Water Tanks Barrels Cisterns And Rain Barrels. Installation Is Straightforward Allowing For Easy Attachment Of An Outlet Tap To Your Water Tank.