I also bought my first set of tips from Sharons daughter and still use them, I like them so well I give them as gifts to my friends so when we are together at quilting retreats or whereever, we have our own bottles of glue with the fine metal tips on them. You take the orange cover off the glue bottle and use one from the package with the tips that will fit the glue bottle and just cut a small bit off the tip of the cap and put a metal tip on that and you are set to go. If, and when the tip becomes clogged just take it off and put it in a cup of hot water for a while and it will be ready to go again.
Good Luck
Suzy