A LARGE EUROPEAN fitter is similar to an Uno fitter, except the inner dimension of the ring measures 1 5/8". The Large European fitter generally resembles a large, flat washer, with the thickness of a penny. The European fitter slips on to the socket, and then a plastic or metal cap gets screwed on to hold the fitter in place.
The Large European-style fitting is becoming more and more popular. Imported lamps, and lamps purchased from IKEA, Pottery Barn, Target or Walmart almost always require European fitters. Sometimes, this fitting is also known as an E26, E27 or Nord fitting. Check the inner diameter. If it's 1 5/8", order this fitter.
You may order this item as a ring (without ordering a shade). To do so, simple configure the options and add the item to your cart.