Bosch 1-3/4" Square x 9-1/4" 16 Tooth Head Bushing Tool is designed for use with Bosch SDS-Max hammers and competitive SDS-Max driver hammers. It removes excess concrete and produces an exterior finish. The latest generation of SDS-MAX chisels and points feature the newest innovation in demolition steel - reflection technology. Bosch's R-Tec reflection point is featured on HS1903 and HS1904. When energy is dispersed with each beat of the hammer, the new R-Tec point reflects the hammer's energy back into the work material, increasing the rate of removal by 15%. The result is faster demolition which increases overall jobsite productivity and profitability.