G12 Male to E26 or E27 female socket converter. CE and Rohs listed. Great when you want to use standard Edison screw base bulbs, but do not want to remove/replace existing fixture. Made from PBT material with a copper contacts. Rated 2 amps @ 277 VAC 554 Watts. This converter can operate from 100 VAC up to 277 VAC. This converter is two pieces of metal that is encased is plastic materials. The two pieces of metal make electrical contact from the two contacts of G12 to the threads and inner contact of the E26. This converter has no electronics so if you bulb cannot handle a ballast you must remove the ballast since you are replacing the G12 ballasted bulb with a standard E27 non ballasted bulb that does not operate at the reduced voltage that a E26 bulb operates at. The length from where the pins start to the top is 2.153 inches. The diameter is 1.254 inches. The overall length from the bottom of the pins to top of the e27 socket is 2.598 inches. Product 47947 operates from 100-277 VAC works perfect in this converter. The terminals are spaced 12mm apart.