The Extra Deep 15/16" Works Well on the 30/36 Spring Brakes for Autocar, CCC Style Dump Trucks, and Garbage Trucks with MGM Brakes. It can also be used to remove fuel tank saddle clamps, headache rack U-bolts, and S-Cam brackets caging bolts. The socket can be used with 1/2" drive and an impact wrench. The socket is forged from alloy steel and heat treated. Also works on other 15/16" deep applications.