The black decker bdch188n hammer drill offers the power and speed to drill into masonry steel and wood with 11 torque settings screwdriving into a variety of materials with different screw sizes its variable speed settings provide fingertip control for all drilling and screwdriving applications the drill has a compact lightweight design for easy handling and an anti slip soft grip for increased comfort bare unit no battery or charger supplied specification chuck 10mm no load speed 0 650min max