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  • 1. Type of Drill There are several types of rock drills available in the market, including pneumatic drills, hydraulic drills, and electric drills. Each type of drill has its own set of features and capabilities, which can affect its price. Pneumatic drills are generally less expensive than hydraulic or electric drills but may not be as powerful or efficient.
  • 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.