These standard or serrated replacement blades are specially designed for the rotary cutter from prym.ergonomics, 45 mm and form a system that is precisely coordinated in terms of form and function. Although the blades are extremely sharp, they can be changed without any problems - because the blades are safely protected from the time they are removed from the pack until they are mounted on the rotary cutter. A high-quality plastic coating ensures safe replacement without directly touching the blade. When not in use, the rotary cutter can be reliably locked using the blade guard. The securely packaged blades should be replaced regularly because blunt blades lead to fatigue, inaccurate cuts and damage the cutting mat. The standard replacement blade has a bright green blade guard;