Concentrated colors are layered and encased in molten clear glass to create a one of a kind knob. A great accent to any home and totally unique, our doorknobs are proven to work on both inside doors and outside gates. Custom color mixes can also be created to coordinate with your home décor. Send us a color sample and we will do our best to match it. Doorknobs are 2.75″ to 3″ diameter. Cabinet knobs are 1.5″ to 1.75″ diameter.