Product Details:

Ribbed Indentations Accent the Finish Beautifully
Fits 1/4" to 1/2" (6 to 12 mm) Thick Glass

The CRL Ribbed Bow-Tie Style Knob measures 1-3/8 inches (35 millimeters) in diameter, and extends 1-9/16 inches (40 millimeters) from the door surface.
Knob is made of solid brass in your choice of nine finishes.

Color:                            Brushed Nickel
Glass Thickness Range: 1/4 to 1/2 in (6 to 12 mm)
Hole Diameter Required: 3/8 or 1/2 in (10 or 12 mm)
Diameter:                      1-3/8 in (35 mm)

Minimum Order: 1 Each