It’s a great tool ... fitting to be installed into the line is then placed on the caulking gun’s plunger. It’s then a simple matter of pulling the trigger on the caulking gun to slowly press ...

The most popular examples of this press tool have a set of jaws ranging from ½-inch all the way up to 2 inches. Here’s the key to how the system works: Fittings such as 90-degree bends ...