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Another key feature of tunnel bench drilling bits is their durability and longevity. Tunneling projects can be lengthy and demanding, requiring tools that can withstand the rigors of continuous use. Tunnel bench drilling bits are made from high-quality materials that are resistant to wear and corrosion, ensuring their longevity and reliability. This durability makes tunnel bench drilling bits a cost-effective investment for tunneling projects, as they can be used repeatedly without losing their effectiveness.

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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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