Goof Plugs, come as a strip of 10 plugs. You order 1 and you receive 10 individual plugs! What a deal!
1) For plugging holes in 1/2" or larger tubing made by a punch.
2) For closing off the ends of 1/4" dripperline
If you punch a hole in 1/2" or larger poly tube and need to plug it up this is how you do it. A very simple method and it actually works great. The plug has two sides. The smaller is for holes made for 1/4" barbs or drippers. The larger is for special use punches that make larger diameter holes.
If the smaller end does not seal up a regular size hole then grab the small side with a pair of pliers and force the larger end into the hole with a rocking motion.