This strut nut socket is an essential service tool for mercedes c class models manufactured between 2000 amp 2008 and also mercedes benz models manufactured between 2003 amp 2008 manufactured for the easy doingundoing of front suspension strut top nuts shock absorber piston rod top nuts fitted to these models this simple to use tool makes a potentially tricky task a doddle simply use with a 7mm hex key to hold the strut in place while you get to work with the strut nut