Industrial Air 3/4 in. x 100 ft. HDPE/Aluminum Air Piping System 024-0397IA - The Home Depot
Super Easy DIY 3/4" Pex Shop Air System ($400) - YouTube
Using PEX for shop air? - YouTube
Amazon.com: ICT Billet 1/2" PEX Pipe Male Hose Testing Tool to 1/4" Air Compressor Hose Test Fitting Aluminum Pressure Test Fluid Designed & Manufactured in the USA Machined Finish .625" 551956-PEX05 :