Upgradelights Harp and 2 Slip Uno Adapters for Euro Fitter 1&7/16 I.d. and 1&9/16 Along with Finial Slip Uno adapters are made to fit directly over a lamp socket found on lamps usually purchased at places like IKEA this adapter will then let a harp attached to it comes with both sizes and a finial that is needed to hold shade down Upgradelights quality comes with both sizes and a finial that is needed to hold shade down Upgradelights quality American family owned small business, USA based customer service. Always next day free shipping from NC.