45 mm Rotary Cutter: The cutters are made of good steel, are sharp and hardly blunt. They are very robust and have a long service life. The rotary cutter is replaceable, safe and easy to use. Easy to Use: The anti-slip handle is ergonomically designed to reduce joint fatigue, which provides better comfort and stability. The use of rotating tools gives you complete control. Perfect Design: The rolling cutter can be mounted on both sides of the rotating tool and can be switched for left and right handers. The rotary cutter is a lot of fun and makes cutting easier. Safety Guarantee: This practical rotary cutter is equipped with a safety button, which prevents the handle from being pressed when it is not in use. It can be closed / opened, which guarantees comfort and safety. Usage: This rotary cutter set is perfect for cutting fabric, quilts, thread, paper and more. It's the ideal tool for quilting, sewing, scrapbooking, card making, and other DIY projects.