Hey DIYers and professionals! These Olfa snap-off blades are seriously sharp and built to last. Made from high-quality Japanese grade carbon tool steel - the same stuff the pros use - these blades maintain their edge way longer than cheap alternatives. Each blade gives you 6 cutting edges, and with 5 blades in the pack, that's 30 total cutting points! When one edge gets dull, just snap it off and you've got a fresh sharp edge ready to go. Perfect for cutting through packing tape, cardboard boxes, paper, plastic films, and pretty much anything else you need to slice through. These are specifically designed as replacement blades for the OLFA Carton Cutter (CTN-1), so you know they fit perfectly and work exactly as intended. The durability is impressive - these aren't flimsy blades that break easily. Whether you're working in a warehouse, moving house, or just tackling projects around the home, having sharp, reliable blades makes everything so much easier. Seriously, if you're tired of struggling with dull blades that tear instead of cut, this 5-pack will keep you stocked with sharp cutting power for ages. The quality is exactly what you'd expect from Olfa - professional grade performance that actually delivers on its promises.