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The primary advantage of using an extension rod lies in its ability to extend the drilling depth without compromising on the torque and power transmission. This is particularly crucial in deep excavation projects, tunneling, and large-scale construction works where reaching substantial depths is a necessity. The extension rods allow drillers to penetrate further into the earth's crust, facilitating the extraction of minerals, installation of anchoring systems, or creation of underground infrastructure.

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When selecting an anchor drill bit, it is important to consider several factors. The first is the material of the bit, which can be made from high-speed steel (HSS), carbide, or diamond-coated. HSS bits are relatively inexpensive but wear out quickly, while carbide bits are more durable but also more expensive HSS bits are relatively inexpensive but wear out quickly, while carbide bits are more durable but also more expensive HSS bits are relatively inexpensive but wear out quickly, while carbide bits are more durable but also more expensive HSS bits are relatively inexpensive but wear out quickly, while carbide bits are more durable but also more expensivedrilling anchor drill bits. Diamond-coated bits offer the best combination of durability and cost-effectiveness, making them a popular choice for heavy-duty applications.

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