Several weeks ago was in canandian tire pick some things up and seen the sale on GRIP-TITE sockets for 20 bux. figure wth can't have to many ways to remove stripped/rotted/rounded fastners in a mechanics tool box and if they save my butt once they paid for themselves, after using them they work as advertised, once on a sway link nut that was stripped, survived a 3/8 impact gun abuse and the one that impressed me was on a 1999 corolla needind an o2 sensor yesterday, the guys in the trade will know what i mean by the term threaded rivets, there was nothing left of the nuts holding the sensor on the pipe tapped a griptite socket on came right off (or what was left) i think these things have paid for themselves in that one usuage