This is for 3 Pool Toy (25 mm hole) PVC inflation/dump valves. These are different from your typical inflation valves in that the hole is very large. These are typically used on inflatable pools as a drain valve for drainging the water or on some toys that have a water chamber, this is used for filling water. These work great as a release valve for quick deflation.
We also have a how-to video for replacing a valve here
Inflation hole: 25 mm
Stem Outer Ring: 39 mm
Height (Plugged and Extended): 10 mm
