Screw covers, hinged type, colour black, pack of 50.  To fit no.6/ no.8 screws.  The hole is 4.2mm in diameter, and the diameter of the cover cap is 12.3mm.

Simple to use- screw through the hole in the bottom half of the cover, then just clip the cap over the screw head and snap into place. 

POST FREE UK!  We always despatch quickly, but if you need it fast we strongly recommend that you take the 1st class post option, as 2nd class can be very slow these days (much slower than they claim).   Next working day courier delivery option available to UK mainland only.