Hand tools for cutting, drilling, grinding, sharpening and for surface treatment, in particular milling heads, and specialized milling tools of PCD (polycrystalline diamond), diamond and carbide milling tools all being hand-operated hand tools specifically used to mill, drill, cut and create openings for cured-in place pipes (CIPP) that are installed as in-liners for larger pipes, and to cut off excess overlap at the end of the in-liners