White Bayonet Cap (BC) [B22] To Edison Screw (ES) [E27]. Bayonet Cap (BC) [B22] male to Edison Screw (ES) [E27] Female. B22 to E27 adaptor is 60mm high by 35mm wide. This adapter allows you to use a Edison Screw Light Bulbs in a Bayonet Lamp Socket.
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