Finally a solution to my thin CA problems. I've often come across these extensions when looking for additional tips for my Bob Smith Industries CA glue (I look through a lot of stuff and a lot of advice). I ended up buying a few to experiment with and will never use attachments without extensions again. This will help you apply glue where you really want it. More importantly, it allows for better control of the amount of glue. This will help prevent inevitable run-out accidents. tip life. When the glue on the tip dries, you can simply cut off the tip itself and get back to work. For such a low price you will save money in the long run.