Product Details:

A Classic Shape for Use With Frameless Shower Doors or Display Cabinets
Fits 1/4" to 1/2" (6 to 12 mm) Thick Glass

CRL Ball Style Knob measures 1-1/4 inch (32 millimeters) in diameter, and extends 1-1/2 inches (38 millimeters) from the door's surface.
Knob is made of solid brass in your choice of nine finishes.

Color:                            Polished Chrome
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:                      1-1/4 in (32 mm)

Minimum Order: 1 Each