These Round Style Fixed Panel Clamps are made of solid brass and are designed to secure glass panels in contemporary shower enclosures. They assist in maintaining the frameless appearance and provide a clean looking alternative to U-Channel. The round shape of this clamp looks especially attractive when securing fixed panels of glass used with our Hydroslide Sliding Glass System, Vertical Post System, or hinge series such as Rondo and Classique. All clamps feature solid brass construction and a variety of finishes to match our Shower Door Hinges. Glass must be drilled with 5/8 or 3/4 inch (16 or 19 millimeter) diameter holes to accept clamps.