Faster, smoother, stronger, cleaner, longer lasting. In a word, revolutionary. Oster Elite Blades are the first blades in the Beauty industry to be coated with titanium--making them last two to three times longer and cut much smoother than conventional blades. The cutting edge has a Rockwell Hardness (HRC) of over 80. The tough cutting edge is hard, but not brittle, with a coating that will not flake or wear off. Elite Blades are far superior to any blade on the market.