Artero A5 cutting blades are made of high carbon steel tempered by a cryogenic treatment (heat and cold) by which they will remain sharper for longer and have extra resistance to oxidation. Artero blades are hand sharpened and undergo strict quality control. Great durability thanks to the Rockwell hardness of 62".
Artero Blade #7F 
For years my go to blade was o**** recently I purchased new blades and was not happy I've been purchasing other brands not happy then I try Artero like all the other times when I try them I'm so pleased . New brands sometimes make me hesitant but now this 7f blade like all other products I've bought are amazing economical and highest quality
