Product review (4 stars): A fix for no or low water flow after replacing the filter cartridge.
The filter works great and is easy to install.
Just cut your 1/4" water line (plastic or copper) and plug the ends into the filter head paying attention to water flow direction.
However, the built in valve that shuts the water off when you twist off the cartridge from the head will wear out and no longer let the water flow.
When that happens the head will need to be replaced.
I  drilled out the plastic valve and now need to turn off the water to change the cartridge but the water flow is 100 percent better and I don't need to worry about that little valve ever going bad again.