45mm Original Rotary Cutter has changed the quilting and sewing industry. The most popular size available, this cutter features a durable handle with a blade cover for safety. The cutter is a rolling razor blade used to cut materials into shapes, strips and pieces for sewing, quilting and craft projects. The blade is made of high-quality tungsten carbide tool steel for unparalleled sharpness and superior edge retention. Designed for both right- and left-handed use.