Mains Socket Backbox Cable Adapters

Adapters with threaded nut for use with 20mm holes in UK mains outlet backbox. 2 versions included - round for load flex and oval for standard 32A 2.5mm twin and earth cable. I created these to tidy up the install of a surface mount fused wall switch (spur). Looks really nice in the MK Metal Clad Flush mount back box (K8891 ALMS2) - but will fit any back box with a standard 20mm hole. Always isolate mains electricity before messing with electrics! Feedback always appreciated.