LH0422 E26/E27 medium base lamp holder/socket with two hole flanged mounting and 6" leads
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Amazon.com : Neewer E26/E27 Lamp Holder with Light Stand Mount, Porcelain Socket and Umbrella Holder, Studio Photography AC Socket for Lamp Bulb Light Stand, 2 Packs : Electronics
Lamp holder E27 with right angle bracket and fixing holes | online sales on HOLYART.com
Bakelite smooth E27 lamp holder - Lamp holders - Plugs and multisockets - Lyvia - Arteleta International S.p.A. - Components, materials and electrical items
Lamp holder for 1 bulb E27 white - Cablematic
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LH0421 E26/E27 medium base two piece lamp holder/socket with center hole for power cord