Very affordable way to buy super glue! It's not a good idea to buy larger sizes because unless you use them quickly, once you open them, the glue begins to harden.  I've had 4 oz. bottles that after opening and storing for a couple of months, it's hardened and useless.  With these small tubes, you get to use what you need and you don't waste so much if you store it. The only complaint I have is what everyone else says; the packaging is difficult to open.  What I did was to slice the labels on the front and rear, then slip a thin blade screwdriver from either the front or back side and slide it to the edges where there are some dimples to keep the top and bottom covers together.  After spreading the dimples a little and wiggling the top cover back and forth, it comes off.  I then heated both dimples on either side with a micro torch just enough to get it to soften a bit, then slid the top cover back over the bottom shell and that expands the dimples to it's now easier to open and close the package halves.