Viair 40047 400P-RV Automatic Portable Compressor Kit
https://www.amazon.com/dp/B004B68XGC..._yLyTCbBPFJEKA
I have the 400P-RV, but got a refurbished unit for under 200. The over $300 new seems a bit rich, but it does work exceptionally well. The 450P has lower CFM & 100% duty cycle, but I opted for higher CFM and 33% duty of the 400, as refilling tires is always well within 20min.
I got 1/4” NPT swivel and a ball chuck, and it makes short work of my weirdly spaced inner dually valve extensions.
Bostitch BTFP72333 Industrial 1/4-Inch Series Swivel Plug with 1/4-Inch NPT Male Thread
https://www.amazon.com/dp/B00HXD2VV8..._JXyTCbKGVV978
Coilhose Pneumatics CH10 Closed Ball Chuck and Clip, 1/4-Inch FPT
https://www.amazon.com/dp/B008PZ7L5O..._D0yTCbHAJ3Q1E