*** BE SURE TO REMOVE OR BYPASS THE EXISTING BALLAST FOR YOUR CURRENT CFL BULBS IN ORDER TO PROPERLY OPERATE NEW MEDIUM E26 BULBS WITH THIS ADAPTER *** Allows for the use of medium E26 base bulbs in GX23 2 pin socket fixtures. Screw the socket adapter into your current GX23 type base socket, remove the ballast, and you are ready to use an E26 medium base bulb. Manufactured with high temperature acrylic composite for superior temperature resistance.