Vktech&reg; 10X E12 to E14 LED Bulb Lamp Holder Lamp Adapter Socket Adapter (Black) E12 to E14 Base Adapter Converter;Lamp Adapter E12 to E14 Base Adapter Converter for LED/ Halogen/ CFL Light Bulb lamp Change your E12 base to adapt E14 screw fitting Materials:conductive copper Size: Approx.3 x 1.6cm(length*diameter)