Upgradelights Antique Brass 2.25 Inch Uno Lampshade Holder Shade fitter ring is approx. 2.25 inches across 3 screws included to hold shade in place Clamps onto the end of a standard lamp socket (like the uno fitter). 3 screws included to hold shade in place Clamps onto the end of a standard lamp socket (like the uno fitter). American family owned small business, USA based customer service. Always next day free shipping from NC.