Non Standard 3/8" Quick Coupler x M22-15 Twist Coupler Socket Adapter. This standard M22-15mm adapter works with most standard pressure washers with 15mm inside diameter (.590) 3/8 Quick Connect plug is required for the gun inlet. Features: • Secure twist connection • Precision machined • Internal o-ring seal Will NOT work with garden hoses, Karcher, or other machines with a standard M22/14mm inside diameter Specifications: • Max. Pressure: 4,000 PSI • Max. Flow: 10.0 GPM • Material: Brass Check out my other items ! Stores