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Button drill bits, on the other hand, are characterized by the array of small, diamond- or tungsten-carbide-coated buttons strategically positioned on the bit face. These buttons act as cutting tools, wearing down the rock surface as the bit rotates. In the case of rock button bits, the carbide material is exceptionally hard and wear-resistant, capable of withstanding the harsh conditions encountered in drilling through various types of rocks.

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In addition to breaking through rocks, tunnel bench drilling bits also play a role in stabilizing tunnel walls. As tunnels are excavated, the surrounding soil can become loose and unstable, posing a danger to workers and the structural integrity of the tunnel. Tunnel bench drilling bits are used to create holes for support structures such as bolts and mesh, which help to secure the tunnel walls and prevent collapses. By stabilizing the tunnel walls, these drilling bits ensure the safety of workers and the success of the tunneling project.

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