LEDwholesalers BA15s to G4, GU4/MR11, and GU5.3/MR16 Base Socket Adapter (5-Pack), 1433 x5 Single contact bayonet base with parallel pins Converts to G4, GU4, and GU5.3 bi-pin socket Enables use of G4, MR11, and MR16 bulbs in BA15s lamp socket Great for enlarging bulb selection for unique applications Sold as a 5-pack bundle