Amazon.com: CEKER 1/4" NPT Push to Connect Fittings Air Fittings 6mm Tube Od Air Line Fittings Pneumatic Fittings Push in Connectors Air Hose Quick Connect Fittings 5Packs : Industrial & Scientific
Husky 1/4 in. Universal Coupler HDB20500AV - The Home Depot
Hi-Flo Quick Connect Air Fittings | Plug & Coupler Kit - 1/4" NPT (Set of
Hi-Flo Quick Connect Air Fittings | Plug & Coupler Kit - 1/4" NPT (Set of
FYPower 15 Pieces 1/4" NPT Air Coupler and Plug Kit, Quick Connect Air Fittings, Industrial Solid Brass Quick Connect Set - Amazon.com