Amazon Basics High Flow Air Coupler and Plug Kit - 1/4-Inch NPT Fittings - 14-Piece - - Amazon.com
EXCELFU NPT 3/8 Inch Stainless Steel Male and Female Quick Connector Kit Pressure Washer Adapter Set and 1 Pieces NPT 3/8 Inch Pressure Washers Stainless Steel Quick Connector Plug Male Nipple