Bosch Power Tools & Accessories launched its Bulldog Xtreme8 SDS-plus concrete drill bits and Blue Xtreme carbide-tipped ...

In rock or compacted soil, a rock motor or air hammer is required to break through the material while maintaining directional control. Steering with a rock motor A bent sub at the drill head houses an ...

making them capable of drilling holes with larger bits into harder materials or even driving in larger fasteners, such as lag bolts. Hammer Drill: Hammers drills come in both corded and cordless ...

Alternatively, lower torque settings are necessary for working with softer materials and smaller bits. Most hammer drills include an adjustable clutch with a range of torque settings, so you can ...