Libao Multipurpose Rotary Cutter 45mm Blade Easy Fabric Cutting Scrapbooking Comfortable Ergonomic Handle for Right and Left Handed Cutting Tool Quilting Crafting Sewing High Quality 45MM blade Rotary Cutter for professional or Hobbyists. Ergonomic handle which sits perfectly in your hand, regardless if you are left or right handed, without stressing out your hands, joints and fingers. The 45MM blade is extremely sharp but it isnt exposed unless you squeeze the handle. It has a special blade-locking mechanism which lets you keep your blade safe when not in use. Comes in a blister package 45MM blade is the most common blade size for quilting, crafting, and sewing. Perfect for making Sharp, Straight-Line Cuts.