ZITRADES(TM) 5PCS/Pack E12 to E26 / E27 Adapter - Converts Chandelier Socket (E12) to Medium Socket (E26/E27) 5PCS/Pack E12 to E26 / E27 Adapter 100% Satisfaction Guaranteed Purchase with confidence Attention: Halogen bulbs is not available using on this Socket.Only for LED bulb.