Which tool used to hold strut nut? Where can find those?
 

How are you gonna hold the deep socket?
Where can I find those?

5 or 6 I think... forgot.. sorry :(

It's 6mm.

Thanks for the allen's key. Now, it seems hard to find 14 mm open ended deep socket wrench. Any recommendations? Thanks

Buy one of these:
http://www.northerntool.com/images/p.../228342_lg.jpg

You can use it on the nut while using a 1/4" drive ratchet to hold the damper shaft from spinning. Works fantastic.

I used Craftsman Max Axxess pass-through sockets and the Allen key to hold the strut and undo the top-nut, not unlike what @d1ck posted.

14mm open-ended socket wrench...what? 14mm deep socket: go buy one at Sears or a set on Amazon or something. Open ended wrench? I like my Stanley ones, but Craftsman will be as good. What tool are you actually looking for?

That's a gearwrench I have the bigger set works great.

I need a tool to turn the nut. Can I just use my hand to turn the deep socket while holding the allen key?

Thanks I will get craftsman max access.

Spark plug socket, allen wrench, adjustable wrench. Works for me every time.

Yeah, but the pass-through sockets make it so much less hassle.