This fitting is made of brass and connects three lengths of hose in a branch tee. Barbed fittings create a tight seal on flexible and semi-rigid hose when used with a hose clamp or crimp sleeve or ferrule. This fitting is for a fixed connection between plastic or rubber hose. It is made of brass for corrosion resistance. Pipe fittings are components used for connecting, terminating, controlling flow, and changing the direction of piping in many different industries. When purchasing pipe fittings, consider the application, as this will affect material type, shape, size and required durability. NEW IN PACKAGE See my store for another listing with options for 2, 4, and 6 in a package.