my Dewalt has treated me right for years, when ever I have to pop a line set thru concrete etc, its as easy as pie, no issues, handle left or right use, quick connect bits, slide chuck back and drop in your bit, love it,above has that ol school right angle drill type of tightening, you can use regular bits but can slip etc, PIA , no slip with mine..ill post which model

http://www.grainger.com/product/DEWA...Code=P2IDP2PCP

probably not exact but similar