Features: Designed for square drives Robust screwdriving Black phosphate coating offers an extra layer of protection against rust and corrosion. Accessories made from heat-treated CRMO (chrome-molybdenum) steel offer strength and resistance to high torque, heat. 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 phosphate coating to protect them from rust and corrosion. The sockets are laser-marked and colour-coded so that you can see .
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