I Like That Lamp Wire Lamp Shade Rings with European Fitter (8” Diameter), Includes 2 Galvanized Steel Silver Drum Rings, Make DIY Table/Floor/Pendant Lamps, Compatible with most IKEA & Target Lamps - -
Ikea Lamp Shade Light Fitting White Metal Reducer Ring Washer Adaptor Convertor | eBay
Making an IKEA lampshade fit a normal lamp. - Momcrieff