Here's a great working Bosch Model 0611250739 Bulldog SDS Hammer Drill . This is variable speed 0-6000 rpm , it says 1350 BPM beats per minute .It is VSR variable Speed Reverse and the hammering is very strong.(This is not worn out at all) This uses the standard Masonry Concrete Quick change SDS Bits . The 110 115 or 120 volt 8 foot Long power cord is in excellent shape with no cuts scrapes or any damage. There is a quick change chuck for the SDS bits . .Call 952 854 5 seven eight six