**MINIMUM ORDER QUANTITY 4 PIECES ** DUE TO FACTORY MINIMUMS, SPECIAL PACKAGING, AND SHIPPING CARRIER COSTS, THIS ITEM REQUIRES A MINIMUM ORDER OF 4 PIECES -
Allows for the use of medium E26 base bulbs in double contract bayonet socket fixtures. Simply screw the socket adapter into your current BA15D D.C. bayonet type base socket and you are ready to use an E26 medium base bulb. The BA15D type socket is a "turn and twist" type also known as D.C. bayonet or double contact bayonet. After inserting this adapter into your existing BA15D socket you can use a medium E26 base light bulb.