A rotary drill is a type of drilling equipment used to create holes in various materials, including soil, rock, and concrete. It operates by rotating a drill bit while applying downward pressure, allowing it to penetrate hard surfaces. Rotary drills are commonly used in construction, mining, and geological exploration. These drills come in various sizes and configurations, from small handheld models to large industrial machines. They can be powered by electricity, diesel, or hydraulic systems. Rotary drilling is essential for tasks such as oil drilling, water well drilling, and geotechnical investigations, making it a vital tool in many industries.