they have a M10 ( 10mm ) thread which is a direct swap for most table lamps/wall lamps

Three internal E27 ceramic bulb holders

Only compatible with double peg mount holders

can withstand heat and cold and therefore weather and wind

High quality European manufactured switches

duroplast rear wired wall ceiling light frosted ADD BULB:No they have a M10 (Designed and Manufactured by Dyke & Dean. One in a series of wall and ceiling Duroplast lamps we make in Europe. The fittings have built in E27 lamp holders which are easily accessible by screwing off the glass case. We have made these to a very high standard so you can pic 'n' mix your glass and recommend our new Dyke & Dean LED bulbs as they produce very little heat inside the glass cavity. Glass branded with Dyke & Dean logo. Can be used in