This OLFA 45 mm straight-handle rotary cutter is a dependable tool for quilting, sewing, and craft cutting where you want long, clean passes. It uses a 45 mm rotary blade for cutting fabric, felt, and paper with a ruler on a rotary mat, and the handle design suits both right- and left-hand use. Engage the blade guard between cuts, avoid cutting on hard surfaces, and replace the blade when it begins to snag or skip.