These CRL Solid Brass Traditional Style Knobs are available in many popular finishes. Overall diameter of knob is 1-9/16 inches (40 millimeters), overall height is one inch (25 millimeter) from glass.Specifications:Material: Solid BrassGlass Thickness Range: 1/4 to 1/2 Inch (6 to 12 millimeter) GlassHole Diameter Required: 3/8 or 1/2 Inch (10 or 12 millimeter)