Astra Superior Platinum double edge razor blades fit all double edge razors. They are made in Russia for Gillette and offer a great shave. They are sharp and smooth. What more can you ask for? When we started carrying them, I (as one of the owners and testers for most products) did not give this new product much attention. However, they seemed to be quite popular, so it prompted me to give it a little more attention. I'm always interested in a great close shave. After giving it a try, it quickly rose to my top 3 blades and I use it regularly. We have also included them in most of our blade sample packs because it is a brand we feel you should try.