Air gap intake and heater hoses

Here's my 1/4" mip x 1/2" hose... you don't this this will work?
View attachment 1715125464
That'll work great. One thing, however: I do not like using brass. Sometimes due the softness of the material, brass cracks due to vibration. That fitting is susceptible to a lot of engine movement, and vibration. I'd use steel for better strength, or better yet stainless steel for the anti-corrosion factor too. (Note that the OEM fittings at the engine were steel).