High Pressure Washer Car Wash Arm 360 Degree Swivel Joint Sw90 1/4 3/8 by | Jul 21, 2026Car Wash Arm Connector 360 Degree Swivel Joint for High Pressure Washer SW90. 304 Stainless Steel High Pressure Washer Swivel Joint for Car Wash Arm 14 38. Pressure Washer Adapter Fit Karcher K2-K7 Gun 1/4″ Quick Connect Connector.