E14 to GU10 Lamp Sockets Adapter: More specifications of lamp holder adapter available, B22, BA15D, BA15S, E10, E11, E12, E14, E17, E26, E27, E39, E40, GU10, GU24, MR16, etc. Certificate: ISO9001&CE&UL&VDE; Free samples and good service; OEM available