[Working Pressure]: This quick connect pressure washer fittings with stainless steel connect nipples withstands pressure is up to 5000-6000 PSI [NPT-compliant]: This quick connect kit and quick connector plug nipples are all NPT-compliant, you can connect to most NPT-compliant connector, please check the specifications before connect them [Size & Quality]: 3/8 inch quick connect pressure washer adapter set is made of high quality and durable stainless steel, please pay attention to connect to the 3/8 inch size connector before connecting [Great Performance]: These 3/8 quick pressure washers and pressure washers' nipples are made with accurate process and with great fit, finish and function, don't leak or fade easily [Application]: These pressure washer adapter set and nipples make a quick connection for attach a hose to the water pumps, hose reels, ball valves, telescoping wands, surface cleaner or regular spray Material:Stainless steel + brass colour:Silver+gold Package Contents: 2 pair x 3/8 inch quick connect pressure washer adapter set Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.