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.
It is used in drill bits, sandpaper, and saws to cut, grind, and polish. Although it holds the hardness record, diamond is not toughâif you smash it with a hammer, it will fracture and break. Diamond, pictured here in an uncut, unpolished state, is the hardest known material.