This 3/8"-18 NPTF Brass Coupler is the perfect addition to your pressure washer accessories. With no internal valves, you can expect maximum flow with minimum pressure drop. It can withstand temperatures ranging from -40F to 250F, making it durable and long-lasting. Each pack comes with one coupler, so you can easily attach it to your pressure washer and get to work. Don't settle for less when it comes to your pressure washing needs, choose this reliable coupler for the best results.