MATERIAL: 3/8 quick connect pressure washer adapter set is made of high quality and durable stainless steel. Higher resistance to corrosion than brass. EASY TO CONNECT: Power Connector Adapter Kit is easier to connect or disconnect when swapping out pressure washer accessories. You can assemble these quick connect plug kit easily. Standard quick connector set makes a quick connection for hose, pump, ball valve, gauge, telescoping wand, surface cleaner and spray gun. NPT-COMPLIANT: pressure wash quick connect sets are all NPT-compliant, you can connect to most NPT-compliant connectors. Stainless quick connector kit is 3/8 inch, please check the specifications before connect them. STRONG PRESSURE RESISTANCE: Working pressure of quick connector for pressure washer is up to 5000 PSI; Ball lock design creates a solid connection PACKAGE INCLUDE: 2 sets 3/8 quick connect plug + 3/8 female thread; 2 sets 3/8 quick connect socket + 3/8 female thread; A teflon tape(Use the teflon tape for a leak-free connection)