Sending unit tool.

Has anyone tried one of these sending unit tools? It looks like it may work on new parts but may be too weak for older rusty parts.
Link http://www.ebay.com/itm/170553684426?_tr...:IT&vxp=mtr

I have one from Wilson Productions

http://www.n96airgrabber.com/products.asp?cat=17

Looks to be similar or the same. I just used it to remove an original sending unit from a 71 Challenger and it worked fine.

I bought that same one from the same seller on ebay about a year ago. Between me and friends it has been used 3 times on cars being repaired/restored and worked well. My only suggestion is to put duct tape on the handle and/or wear gloves to be easier on the hands.