4 pc 1/4Inch BSP Air Line Hose Fittings Quick Release Coupler Bayonet Connectors Male Female - Amazon.com
LBY Air Coupler and Plug Kit,Air Hose Fittings, Industrial Type C Air Compressor Pneumatic Connector, SM20/30/40+PM20/30/40 Quick Connect Accessories Kit, Pack of 6 - Amazon.com
3 Way Triple Quick Fitting Snap Disconnect Coupler Connector Set for Air Hose - Walmart.com
SC/APC to SC/APC Simplex OS2 Single Mode Fiber Optic Adapter/Coupler with Flange (10pcs/Pack) - FS.com
Husky 5-Piece 1/4 in. NPT x 3/8 in. Automotive-Style Quick-Connector Coupler Kit HKATA091002 - The Home Depot