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A typical hole cutter drill bit consists of a circular blade with teeth on the perimeter, a pilot drill bit at the center, and often a shank that connects it to the drill. The pilot bit helps guide the hole cutter, ensuring a straight and accurate cut, while the sharp teeth on the circumference do the actual cutting. The design allows for faster removal of material, reducing the time and effort required compared to other drilling methods.

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A tapered drill rod is essentially a steel bar with a gradual reduction in diameter from one end to the other. This design feature enables smoother and more efficient, as the taper allows for better torque transfer and reduces the chances of stick-slip occurrences during drilling. The taper also aids in the insertion and extraction of drill bits, making the process faster and less labor-intensive.

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