QUALITY THAT'S VISIBLE. WITH TRAPEZOID BLADE. Would you like to have a safety knife with a large blade extension? Or are you looking for a Cutting tool that can cope with the toughest of tasks? In both cases, the SECUPRO MEGASAFE is an excellent choice. Thanks to a Cutting depth of up to 20 mm, this safety knife doesn't shy away from a challenge. And no matter your task, safety is always guaranteed; the fully automatic blade retraction functions even when you decide to not fully extend the blade.