Thank you for your price reduction request! Antique Door Knob Set Made of glass I bought several and kept them when I made a handmade door. They are old, but the subtle color of the brass reflects in the glass, creating a beautiful amber color. The square shaft thickness is 7mm. The length is 76.8mm. Thank you. - Material: Glass and brass - Design: Fluted glass knobs - Style: Antique vintage style - Condition: Used, with minor wear - Color: Clear and brass - Type: Door knobs Thank you for viewing.