Classification for electric drills specialized in drilling operations at manufacturing sites. Includes cordless and corded electric drills, drill drivers, hammer drills, and rotary hammers used for precision drilling work in metal processing, wood processing, and resin processing. This product group features torque adjustment, variable speed, and forward/reverse functions as essential tools for assembly work, machining of mechanical parts, and jig manufacturing in manufacturing industries. Clearly distinguished from other power tools such as impact drivers and grinders, targeting tools specialized in drilling and screw tightening functions primarily through rotation.