There are pictures for each topic to help you better understand the content. Email for sample, Table of Contents, questions and ordering information. Will Rout Plastic. The spiral tool is solid carbide, ground for boring, expensive and loves plastic. The other two tools are WKW carbide on steel, each with a carbide boring point for blind or through cuts.
Dull cutters are a safety risk.
Use only new tools on plastic if you are just beginning.