Dritz BONROB Rotary Cutter Set with Rotary Cutter Blades 45mm(6pcs Replacements), Perfect Set for as sewing, quilting, fabric cutting, paper cutting, leather cutting and other DIY Projects BO005 REPLACEABLE: The Rotary Cutter is replaceable, Each rotary cutter set also comes with 6 extra replacement blades  3 for straight line cutting; 2 for curve cutting; 1 for dotted line cutting;The blades can be installed on both side of the rotary cutter, perfect for both right- and left-handed users. SAFE - Your safety is our top priority. This handy rotary cutter is designed with a safety button to lock the blade. Even a kid can use this rotary cutter tool rotary cutter leather safely under the supervision of his/her parents! PRECISE: The 45mm blades are made of SKS-7 steel, sharp and hardly dull. With different replacement blades, you can cut multiple layers of fabric, paper or other materials precisely with the help of sewing cutters. VARIABLE:FITS WITH ALL 45MM ROTARY CUTTER - Including Fiskars, Olfa, Truecut, Martelli, and most 45mm Rotary Cutters.blades rotary cutter with anti-slide handle is ergonomically designed to reduce joint fatigue. GUARANTEE: If you are unsatisfied with this product for any reason, please just let us know and we will refund your purchase right away.