"Very handy and useful but beware that the "nose" part is much more prominent than expected (protrudes about 30mm). The picture and screwfix's rather inadequate description, (it is actually 100mm x100mm), makes the item appear much smaller and less obtrusive than it is in real life. I bought them to create a neat egress for a CCTV cable. I ended up using silicone sealent to block the hole instead of using this item because it was much too big for the job. Would be ideal and less "overkill" for bigger cables such as co-axial. Good value though at just over £1 an item."