BQLZR 45 Degree Blade Cutting Plotter Vinyl Cutter CB09 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 Size: 45 degree Length: 18.5mm(0.73 inch)