In these non-criminal contexts, the victim can sue the harasser in a private civil lawsuit, alleging that the harassment constitutes discrimination. On the other hand, criminal harassment is usually confined to state law. States vary in how they define criminal harassment. Generally, criminal harassment entails intentionally targeting someone else with behavior that is meant to alarm, annoy, torment or terrorize them.
Cobalt drill bits are most commonly used for drilling stainless steel and other metals. Diamond Drill Bits. Polycrystalline diamond (PCD) is one of the hardest tool materials. It actually consists of a layer of diamond particles bonded to a carbide support.
For most household projects, a high speed steel drill bit is sufficient. When you're drilling through hardened steel, however, a strong, heat-resistant drill bit is needed. A titanium drill bit is good enough for most home projects. However, if you do a lot of drilling into hardened steel, a cobalt drill bit, although expensive, will provide long-lasting performance.