Plumbing Pipe To Light Fitting Coupler 10mm. This component allows you to attach our existing 10mm threaded entry lampholders to (12mm) 1/2″ BSPT plumbing pipe and hardware. These are suitable for connection of Bakelite E27 and E14 lamp holders.
Note: 1/2″ BSPT pipe diameter is ~22mm OD.
Available in steel or flat black.