Lamp Adapter Base Double Contact BA15d Bayonet G4 Bi-Pin Adapters allow any of our bi-pin G4 bulbs to be used in any Bayonet type sockets. Great for reducing SKU's for dealers keeping stock.
These BA15d Adapters are high-quality and made to our specifications, featuring a ceramic knurled grip-ring for easy installation into the bayonet push-and-twist sockets.