"Recently bought one of the new Dewalt retractable knives and one of their fixed blade knifes, (excellent little tools). Whilst they come with 5 blades, they're well used tools in my bag, I soon needed some replacements. They come in this little dispenser (the images don't show you how it works) but you pull out the yellow tab at the bottom and it brings out one blade at a time, genius! Much better than the loose ones you can buy in the vacuum form packs. Now, No more tool bag pockets full of loose blades! There are cheaper blades out there of course, but these blades are much better quality than say the screwfix own brand ones (sorry!) which seem to wear down a lot faster at the tip, especially if you're cutting tough materials like damp proof course or plastic tubing and trucking. Definitely recommended!"