The Hydro Systems 250006 is a weight used to hold soap lines below the surface of the chemicals held in holding containers. Without the weight, lines would float to the top unless held down by another method. This weight replaces a worn or damaged one inside your chemical feed tubing. Made with ceramic for it's resistance to corrosive chemicals. This is OEM part is made with an I.D. measuring 1/4" and an O.D. measuring 1/2". Specifications: