Antique silver metallic glass (also called mercury silver ) cabinet knobs for your kitchen and bathroom cabinets and drawers. Add a touch of elegance to your household cabinets, drawers or dressers with these antique cabinet knobs. Cabinet knobs are approximately 2.0" in diameter. Delivery time is normally 5 to 7 business days. If the item is out of stock delivery will take 4 to 5 weeks.