Chicago Coupling — 2-Lug Chicago Coupling Hose Coupling
Amazon.com : 10 Piece 3/4 Inch Plastic Garden Hose Connect with Shutoff Valve Male and Female Connectors for Water Hose Coupling, Quick Release Kit Hose Fittings Adapters with 10 Pieces Rubber Gaskets :
Coupler with Hose Connector (Typ C) - Schwer Fittings
air hose coupler - air hose connectors | Turbine Products
3PCS Quick Coupler Air Hose Connector Fittings 1/4 NPT Plug Compressor US JP EU | eBay
2" BSP Coupling Water Pump Female Hose Tail Connector 50mm Suction Layflat NEW | eBay