Round Glass Doorknob Set.
Clear glass knob measures 2 inch diameter. Overall knob projection measures 2-1/16 inch.
Available with Polished Nickel (image 1), Brushed Nickel (image 2), Oil Rubbed Bronze (image 3) and Polished Brass base (image 4).
Set includes 2 knobs, steel spindle, and an allen key to tighten set screws