Imperial Global 45mm Replacement SKS-7 Titanium Coated Rotary Cutter Blades, 10-Pack BEST VALUE pack of TITANIUM coated blades on the market by Imperial Global Ltd. ULTRA DURABLE TITANIUM coated SKS-7 tungsten steel blades which give greater life span with a razor sharp cutting edge which will last a lot longer than uncoated steel blades. COMPATIBLE, these replacement blades are compatible to Olfa, Fiskars and some other rotary cutters. VERY SHARP, supplied in a free snap close case, be aware that theses blades are sharp and need to be kept secure. GUARANTEED 100% with our Imperial Global satisfaction and money back Amazon backing.