Glass Clamp 135 Degress Glass-to-Glass are designed with a unique two-tone accent. Used to connect two fixed glass panels. SPECIFICATIONS: Material: Solid Brass Glass Thickness Range: 3/8 to 1/2 Inch (10 to 12 millimeter) Glass Fabrication: 5/8 or 3/4 Inch (16 or 19 millimeter) hole in each panel. Includes: Mounting Screws and Gaskets