PROS:- It is a step up from those "crazy" glues of yesteryear which would only give me one use and then cement itself to the cap forever. This glue seems to be the regular Gorilla Glue formula but in a container which can give out small precise amounts. Best be very careful because a lot comes out at first so use a lite touch. Then hold firm as it dries within 2 minutes.- If I replace the cap as soon as I apply the glue it doesn't harden.CONS:- I cant tell how much glue remains.