3/8" X 1/4" MNPT Brass Air Hose Barb Fitting For 3/8" Hose – compressor -source
Kobalt 360-Degree Swivel Connector 1/4-in in the Air Compressor Accessories department at Lowes.com
Primefit 360° Air Swivel Connector (3-Pack) HFS14F14M-3 - The Home Depot
Kobalt Adjustable Swivel Connector in the Air Compressor Fittings department at Lowes.com
Air Connectors & Fittings | Air Accessories | Wynnsky
FYPower 10 Pieces Hybrid Lead-in Air Hose kit, 3/8 Inch x 6 ft Whip Air Compressor Hose Kit, 1/4" NPT Air Coupler and Plug, Industrial Solid Brass Quick Connect, 360° Swivel Connector - - Amazon.com
1/4" Male NPT Swivel Plug Air Compressor Tool Swivel Ball Connector Coupler | eBay
FIXSMITH Air Hose Connector 2 Pack - 2 Way Air Hose Splitter,1/4 In NPT, Air Compressor Accessories Fittings, Swivel 360 Degrees Connectors. - - Amazon.com