Type: B22 (Male) to E27 (Female) Light Bulb Adaptor. Function: Allows you to use an E27 Edison screw bulb in a B22 bayonet socket. Base Conversion: 22mm Bayonet (B22) → 27mm Edison Screw (E27). Convert your bayonet cap (BC/B22) lamp socket to accept Edison screw (ES/E27) light bulbs with this handy adaptor.
eBay