SurfaceMaxx M22 Hose To Hose Connector in the Pressure Washer Parts department at Lowes.com
Amazon.com: POHIR Pressure Washer Garden Water Hose Adapter 14 Pack Full Set, 3/8 Power Washer Quick Disconnect Kit with M22 Swivel to 3/8'' Quick Connect Fittings, 3/4" to Quick Release and M22
Sun Joe 14 mm M22 Male - 15mm M22 Female High Pressure Hose Adapter, Fits SPX Series Pressure Washers for Other Accessory Brands SPX-M22M2F - The Home Depot