The OLFA RTY-2DX/MAG ergonomic rotary cutter is a 45 mm cutter for quilting, sewing, and craft materials when you want an easy-to-hold, curved grip. Its finger grooves help reduce fatigue, the blade retracts automatically for safer handling, and the dual-action lock helps secure the blade when needed. Set it up for right- or left-hand use by following OLFA’s conversion instructions, and use a rotary mat and ruler to guide straight cuts.