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A drill bit is what actually cuts into the rock when

drilling an oil or gas well. Located at the tip of the drillstring, below the drill collar and the drill pipe, the drill bit

is a rotating apparatus that usually consists of two or three cones made up of the hardest of materials (usually steel,

tungsten carbide, and/or synthetic or natural diamonds) and sharp teeth that cut into the rock and sediment below.

In contrast to percussion drilling, which consists of continuously dropping a heavy weight in the wellbore to chip away

at the rock