Worked great to install new 3/4" thru hull. Haven't tried it yet, but looks like it would also work for thru hull removal

I bought this wrench to help remove and install new thru hulls. (Note that the description plainly states that it is not for "removal"). If I could have had enough room inside of the bilge for the thru-hull removal, the wrench might have worked but we ended up just grinding the mushrooms off the thru-hulls and then using the tool for the reinstall. Worked great and we (two person tool only, one on the boat inside and one outside holding the tool with a monkey wrench) were able to quickly reinstall new thru-hulls. Couldn't have done it without this tool.

I found it very useful both to put in thru hulls and also to remove them - I don't know why the manufacturer says it is not suitable for removing thru hulls. It's robust, heavy duty and does what it's designed for.

If the thru-hull is old, its knobs/keys that the wrench locks into may be gone. Then the wrench is useless and you either try vice grips or a grinder and grind off the ring of the TH. For an install, the tool was VERY helpful to tighten the TH from the outside where there was not room for a wrench on the inside nut.

You can put a wrench on it without any problem.