The Symfonisk lamps can be used with a majority of Ikea lamp shades. : r/sonos
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 - -
How To Fit Ikea Shades Onto Non-Ikea Lamps (And Fix Other Crooked Shades!) - Shine Your Light