You have no idea the amount of trouble to switch from a 1/8-1/8 air hose to a 1/8-1/4 one. I bought an Iwata hose without really paying attention to the end with the 1/4 on it. No big deal just gotta find a fitting that will work for it. Not a single hose and fittings shop in my town hall anything close to this. One shop literally just dug through a used pile of used ones and tried selling me it (and it didn't work) thank God for spraygunner and the other people who bought this before me and reassured that THIS is what i needed. hooked it up no taping needed either did a watery soap check no bubbles from leaks. If you are in the same boat at me, this is the part you need.