Upgradelights Slip Uno Adapter Harp Converter Lamp Shade Uno Euro Fitter 1 9/16 I.D. Slip Uno adapter Adapter fits directly over a lamp socket (often purchased at many popular retail stores). Attaches to the harp Adapter fits directly over a lamp socket (often purchased at many popular retail stores). Attaches to the harp American family owned small business, USA based customer service. Always next day free shipping from NC.