Medium Base Complete, Aluminum Shell Incandescent Lampholder, Removeable Turn Knob, Single Circuit, 1/8 IPS Tapped Bushing with Set Screw, Brass
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LEV 10083-16
https://leviton.com/content/dam/leviton/lighting-controls/controls/product_documents/instruction_sheet/Portalampara-Spanish-Instruction-Sheet.pdf