Package Content: You will receive 2 sets of quick connect meter co-lingers external threads, 1/4 inch. Suitable for most NPT compatible connectors, enough for your daily use. Compatible Size: The quick connect fittings are compatible with NPT are not easy to leak fade, you can connect to most NPT compatible connectors. Pay attention to the connectors connected to a 1/4 inch size before connecting. Special design: Our product has thread ball lock design, which is convenient for frequent assembly disassembly under high connection pressure.The ball lock can ensure a firm connection prevent water leakage when high pressure connections are made. Our 1/4 quick connect fittings are made of stainless steel, not easy to break deform, giving you a very useful experience. Its working pressure can be up to 5000 psi can withst hot water temperatures up to 155C. Wide application : Our pressure washer fittings are easy to install, making quick connections to pipes, pumps, ball valves, etc. You can apply it to other places with suitable sizes.