The work great in two aplications.
First is the obvious, of retapping a striped 6-48 scope base screw hole.
The other is on Weaver rings, if you stripe one of those, you can usually just retap and replace with a new over-size screw and salvage a stripped thread.
I saved the day on a FN front screw today, by using a new screw.
A better idea at that point may be to drill and tap all the screws to 8/40, at least on the bases.
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Ray Atkinson
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Life is more exitin' when yer stickin' suppositories inta a wildcats behind!