Lisle LIS49000 1/2 in D 3/4 in Truck Spring Socket 6 Point Extra Deep Impact Socket

• Extra deep 3/4" socket
• Use with a 1/2" drive or 7/8" hex
• Can be used with an impact wrench

This socket is used to quickly unlock truck air brakes. Also removes the air brake booster for replacement. It's rugged design allows for a long and stronger tool life.