Great product! However, I had a difficult time making a hole in the tip. A specialized pin encased in a hand-sparing cylinder, but I could not puncture it. 1/16 is the diameter needed. I have a kit with punches, and the 1/16 worked perfectly. However, next time I would use a 1/16 drill bit and spin it between my fingers to drill the spout open.
Apparently, in my reading, trying to find which glue, electrical tape seems to unwind in time. Also, I learned that electrical tape is made of PVC compound. Electrical tape should be stretched to activate its adhesive properties fully.
I followed the instructions for using glue. It worked wonderfully. Concrete solid.