Brass fitting M22/1.5 to M22/1.5 SA000-BFM2215 - Waspper
SurfaceMaxx M22 Hose To Hose Connector in the Pressure Washer Parts department at Lowes.com
Amazon.com: POHIR Pressure Washer Adapter Set 8 Pack, 2 Different M22-14 Swivel to 3/8'' Male and Female Quick Connect, 3/4" Brass Garden Hose Quick Release Connector and M22 15&14mm to 14mm NPT
Amazon.com: Tool Daily Brass Pressure Washer Adapter Set, M22 to 3/8 Inch Quick Connect, 3/4 Inch to Quick Disconnect, Male M22 Hose Adapter, 9-Pack : Patio, Lawn & Garden