As I mentioned I had gotten Nylon 1/4″ Vacuum hose which will go to a vacuum block to things that need accurate source of pressure and vacuum.

The Nylon hose I bought from Automation Direct for $17.00/100 feet. The fittings I also bought there.

The silicone 5/8″ Hose I bought from Verocious Motorsports. I think it was around $2.99 per foot.

Here are the pictures: