This Olfa 45mm rotary cutter is designed for left or right-hand use. This straight handle cutter features a blade cover, slightly grooved handle for improved grip while cutting and comes loaded with a tungsten carbide tool steel blade. This cutter is intended for use with a self-healing cutting mat to both protect your work surface and to extend the life of your rotary blade. Once the rotary blade becomes dull simply replace the blade with a new one to continue cutting away!