I use a Hilti TE56 hammer drill at work to drill 1"-3" holes through stone, cement, cinder block foundations...several times a week. This tool won't let you down. I have never had a problem with one I also have their 14.4 volt impact driver and drill/hammer drill combo no problem there either. For powder actuated gun I use a Ramset again used same one for 5 years kept it oiled and never had a problem.