THE SAFETY KNIFE. WITH ROUNDED-TIP TRAPEZOID BLADE. Over 40 years ago the SECUNORM PROFI set standards in safety, robustness and ergonomics. Its successor goes several steps further. For example, the new aluminium handle significantly improves handling and makes Cutting easier, the new slider can be operated from both sides and the blade change has been made so much simpler. Apart from these improvements, the proven automatic blade retraction will continue to protect you from Cutting injuries.