Bosch HS1935 R-Tec Flat Chisel SDS-MAX Hammer Steel, 1 Inch x 16 InchBosch 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. Highlights: Size: 1 inch x 16 inch Self sharpening and less binding No jam design For use with demolition and rotary hammers that accept SDS max shank drill bits 15 Percent higher removal rate compared to standard chisel