Rubber 2 inch Test Ball Plug-Inflatable 2 inch Plumbing Test Plug Balloon for Shower Drain,Sewer Drain Pipe,Pneumatic Hydraulic Bladder,Maximum Inflation Pressure 40 PSI

Please do not buy it. I bought two of these and both exploded under 5 pounds of pressure.Right away it didn’t even last for five seconds.

Test plug split in half under pressurization. These small test plugs don’t handle much pressure. 5 to 6 lbs max. Ended up using a different style plug that was longer and a little more robust

These are perfect for bending PVC pipe with a heat gun and minimizing deformities. Using the sand filling method, these go in and inflate in a second, and they don't fall off or become a bear to remove vs using PVC end caps. Obviously, they also do the job for testing pipe installs, too.

blew out at seam on second use. Did not overinflate using hand pump. poor quality I'd say!! Blew $20 I guess

They did not work at all

I use these to test shower pan liners to make sure they won't leak after the tile is laid and this one performs just fine. It comes with a valve stem remover cap so that you can let the air out quickly as well. I didn't have any issues and would recommend it if you do pressure tests often.

Item blew apart twice applying a small amount of air.

Dry rots and cracks