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Bettomshin 1Pcs T8 Waterproof Light Bulb Holder, Tombstone Single Head Lamp Bulb Holder Socket Adapter for LED Fluorescent Bulb Replacements Lampholder White - Amazon.com
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HAG 15m E27 Waterproof Bulb Holder - HAG Store: Quality Is Our Priority
Leviton Rubber Weatherproof Outdoor Light Socket for Medium Base Incandescent Bulbs 124-D - The Home Depot
660W 250V E27 Waterproof Ceramic Lampholder Base Socket Lamp Holder+Rubber Cover With 2X0.75mm2 Cable For Outdoor Use From Libaolighting, $20.11 | DHgate.Com