A great tool for making quick cuts into cardboard, foam, plastic, twine and more, the Fiskars DIY Snap-off Utility Knife boasts eight razor-sharp, snap-off edges in a single 18 mm blade, for a sturdy cutting tool that goes the distance. It is perfect for complex DIY projects. When a blade edge dulls, all it takes is a simple slide of the lever and a snap to enjoy a fresh, razor-sharp edge. Plus, its hefty, durable handle is sculpted for comfort and enhanced with a rubber grip for added control during cuts that require a little more force. The knife comes stocked with five blades or 40 edges that load automatically after the old blade is removed for added convenience. Blade slider makes extending and retracting blade easy.