We have Rockwell ProGrade 8A Hammer Drill with Product Detail 1/2" all metal keyed chuck Drilling capacity; masonry 3/4", wood 13/8" and steel 12" Lock-on switch for continuous use Aluminum gear housing Variable speed for greater control when drilling and driving . The "Rockwell ProGrade 8A Hammer Drill" is best product for you. We recommended Rockwell ProGrade 8A Hammer Drill