When replacing the front struts ( shock absorbers ) on a W201 W124 or W129 chassis it is frustrating and time consumming trying to remove and replace the big 22 mm top nut on the front struts ( shocks ). You have to hold the top of the shock with a 7 mm hex wrench so you can not use a socket and a 22 mm regular box wrench gives you only minimal movement of the nut. Kent decided to come up with a new tool. This tool is custom make in our shop. The socket size is 22 mm and the open end size (which is not important for installing the top of the shock) is either a 17, 19, 21 or 22 open end wrench depending on the combination wrenches we have available to cut. This wrench is for providing a strong handle only.
In the pictures below you can see the added movement this wrench allows and how the hole through the socket lets you use a long hex wrench to speed nut removal and installation: