I owe Wayfair a huge apology for a previous negative review concerning these sconces. When our contractor installed them he told us the specs were inaccurate as to the type of bulb they required. I took a picture of the base, and it is the strangest bulb base I’ve ever seen, but after actually feeling the base with the tip of my finger I could tell there were ridges to accept a candelabra bulb base. The E12 bulbs do fit, the specs are accurate, and the sconces are gorgeous. Once again, my deepest apologies to Wayfair for my previous review and complaints.