A concrete drilling project is a two-sided issue. Should be simple, and is if you have the right equipment and tools. Similar to all projects. If the project in question involves concrete walls, floors, or posts, look at what size the hole needs to be and how deep you need to go. Household tools are not going to work here. You need some serious power and torque in concrete drilling tools. Concrete drilling is a tough job and probably dictates electric power tools for the consistent flow and supply of power to get around 8 inches deep. Bosch power tools and ICS tools have a super line of concrete cutting tools and saw blades. Remember, right tools for the right job.