Bosch Pro 1/2 Drive Impact Socket Set 13m - 24mm Bosch Accessories 2608003032PRO Impact Socket Set for Robust Screwdriving You can use the PRO Impact Socket Set to handle hex screws, bolts, and nuts with your square drive wrench. We designed it to help you with screwdriving tasks in plant installations or other types of heavy industrial work. We made the sockets in the PRO Impact Socket Set from heat treated CRMO (chrome molybdenum) steel and gave them thick walls to make sure they resist high torque. We added a black