Overhead drilling into concrete from the floor has been an expensive and awkward task in the past. Most choices were expensive or time consuming at best. Now overhead drilling to concrete is easy and inexpensive using the new Overhead Drill Machine. The Overhead Drill Machine (ODM) uses most standard D handle SDS rotary hammers to drill into concrete ceilings up to 13' in height. The unique actuator system engages the hammer as your bit approaches the ceiling. If your ceiling height is a uniform height, utilize the included foot lever for easy low fatigue installs. You really need to watch the video, to appreciate the simplicity and usefulness of this system!