Bosch R-Tec technology for SDS-max chisels use an energy-diverting reflection element that increases material removal. The tool and bit do more of the work with less vibration for the user. The R-Tec chisel features a unique cutting head with extra wedges for increased breakout.,Self sharpening and less binding,No-jam design,15 percent higher removal rate compared to standard chisel,For use with demolition and rotary hammers that accept SDS-max shank drill bits