The drill can be set to work in 2 different speed ranges. Low speed (0-1400rpm) has more torque and is suitable for drilling holes in some hard materials. High speed (0-2800rpm) has less torque but is faster and is suitable for drilling holes in soft materials or other operations. You can choose different drilling speeds according to different situations. So the combi drill can easily meet a wide range of needs for drilling in wood, plastic, metal or other materials.