The quick connect allows you to quickly and easily attach your pressure washer hose to your wand and other accessories.  The 3/8" size typically attaches to the hose side of your wand and hoses.  The heavy duty brass resists deformation due to pressure spikes and pump pulsing.  The zinc plate on the steel nipples resist corrosion.

Landa Stock #

8.707-134.0  3/8" MPT Socket

8.707-124.0  3/8" FPT Socket 

8.707-157.0  3/8" MPT Nipple

8.707-156.0  3/8" FPT Nipple