BQLZR 30 Degree CB09 Cutting Plotter Blades for Vinyl Cutter Plotter Pack Of 5 good wear resistance high durability Safety instructions: Razor blades permanently enclosed in a cartridge or housing with less than 2mm of blade exposed. The bladed product is not use for people under 18 years. The item is only use for industrial cutting/engraving, not hazardous article.