This OLFA 45 mm rotary cutter is intended for quilting, sewing, and craft projects that need smooth, continuous cuts and accurate strip work. It accepts OLFA 45 mm rotary blades and is designed for use on a rotary cutting mat with materials like cotton, paper, vinyl, and light upholstery fabrics. Keep the blade covered when not cutting, use a stable ruler for straight cuts, and change the blade with care when it becomes dull.