As it turned out, graphite under pressure is a terrible idea. As careful as I tried to be to put the little extender in a door lock that was sticking, it went everywhere. What a mess. Took over an hour to clean up plus I will have to do some repainting- and at one point, not sure I was going to be able to get it off the tile floor. Next time I will use WD40 (which I did here and it worked fine) or a silicon product. If you need graphite, I remember small squeeze type tubes that at least you can control but I did not seem them at Home Depot.
Difficult to Use