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Cutting drill bits come in various shapes and sizes, each designed for specific applications. For example, there are center drill bits that have a point in the center for drilling into metal, wood, or plastic. These bits are ideal for creating starting points for larger holes or for working with materials that tend to chip or crack when drilled These bits are ideal for creating starting points for larger holes or for working with materials that tend to chip or crack when drilled These bits are ideal for creating starting points for larger holes or for working with materials that tend to chip or crack when drilled These bits are ideal for creating starting points for larger holes or for working with materials that tend to chip or crack when drilledcutting drill bit. Another type is the step drill bit, which can create multiple hole sizes without changing bits. This feature is especially beneficial for tasks that require precise hole depths or diameters.

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Coal drill bits come in various types, each tailored to specific geological conditions and drilling needs. The most common types include button bits, tungsten carbide insert (TCI) bits, and steel-to-steel (STT) bits. Button bits, with their carbide buttons on the surface, are ideal for softer rocks and coal seams due to their excellent wear resistance. TCI bits, on the other hand, are more suitable for harder formations due to their tungsten carbide inserts that provide exceptional toughness and wear resistance. STT bits, made entirely of steel, offer a cost-effective solution for less demanding drilling applications.

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