Hammer drill and impact drill

A hammer drill is designed to drill holes in hard materials like concrete, masonry, and stone. It operates by creating a pulsating motion that helps the bit chip away at the material. This type of drill can be used with different types of bits and can also be used to drive screws and other fasteners.

An impact drill, on the other hand, is designed to drive screws and fasteners quickly and efficiently. It creates a rotary motion that is augmented with a series of concussive blows that provide extra torque to drive screws and other fasteners into harder materials like wood and metal. Impact drills are compact and lightweight, making them easier to handle in tight spaces.

In summary, a hammer drill is best for drilling into hard materials, while an impact drill is best for driving screws and other fasteners into hard materials.