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 oil exploration. These drills can vary in size and power, from small handheld models to large industrial machines. They often use different types of drill bits, such as diamond bits or carbide bits, depending on the material being drilled. Rotary drilling is efficient and effective for deep drilling applications.