Toplimit 4 Pack E27 TO E12 Candelabra Medium Screw E27 to Screw E12 Enlarger Light Bulb Base Socket Adapter Package Content :4 pcs light bulb socket Cap type : E27 to E12, Size : 3.8cm x 6.5cm E27 to E12 socket for LED lighting Material : Metal, Flame Retardant PBT Voltage : Max 250V,rated power 50 watts