60MM Endurance Blade by Olfa Rotary Cutter MD-1132759 Manufacturer: OLFAProduct Content: Rotary CutterType: 60mmOrigin: Made in Japan 60mm Endurance Blade. Innovative engineering-propietary Tungsten steel metal chemistry with innovative heat treatment process for exceptional durable long life. Retains cutting edge two times longer while cutting fabric before dulling.