This OLFA® Endurance Rotary Blade cuts TWO TIMES as long as our standard rotary blades. The expertly-honed tungsten tool steel blade with proprietary metal chemistry is designed to cut twice as long to extend time between blade changes, saving you time and money! The replacement blade fits any OLFA 45mm rotary cutter. Not only it lasts longer, but it cuts much smoother too! Good For: cutting strips and multiple layers at once. Cuts fabric, paper, tarp, vinyl, upholstery and more.