Before

After

This adapter is perfect for many aquariumists who use gravel cleaning systems like Python, because this is a direct fit adapter that connects the T-pump part to faucets that have 13/16-27M outlet. I specifically wanted a direct fit adapter for the T-pump because joining multiple adapters can be troublesome in my case as I need to use the gravel cleaning system with two sink faucets that each come with different thread.