A set of three "Pen Liner" scribing tools for scribing lines into plastic or other materials. Three widths are included: 0.1mm, 0.15mm, and 0.2mm. These tools are great for creating straight or curved scribed lines. The blades aren't sharpened, but are serrated to allow for safe and accurate scribing. Making them even safer is the flippable hood that covers the blade when not in use.