Leviton 1403-I Keyless Socket Adapter with 2 Outlet, 660 W, 125 V, Medium Base, Ivory, 10 Lampholder Outlet Adapters convert lamp holders into lamp holders with outlets 660watt 125 volt NEMA 1-15 Converts medium base lamp sockets only 2 year warranty UL Listed, CSA Certified, NOM Certified