For Those Who've Swapped RV2 For Sanden Compressors...
I agree that the Sanden is efficient and does cool better.
I got my stuff from Summit,Vintage Air fittings and hoses.Many different sizes and configurations.
If you looks at some You Tube videos there are many types of hose ends that require crimp tools and others that don't.
Lucky a local guy had the crimp tool and let me borrow it.
Good luck .