The Lisle Truck Cage Bolt Socket 1-1/16", No. 49040, is an extra deep alloy steel 1-1/16" socket that works on 30/36 spring brakes on 2016-2017 Freightliner dump trucks and removes other types of clamps and bolts. The socket can be used with 1/2" drive and an impact wrench. The socket is forged from alloy steel and is heat-treated. It also works on other 1-1/16" deep applications.