1/4 Inch Male & Female High Pressure Washer Brass Ball Quick Connect Coupler
Quick Disconnects feature 8 ball bearings with a rubber o-ring for secure conduit connections throughout the wire delivery system.Other disconnects on the market often only have 3 ball bearings, resulting in a loose connection that can result in unnecessarydowntime. Female threaded disconnects fit a variety of feeder inlet guides as well as adapter fittings with the proper thread size. Rubber insulator sleeves are available to reduce the risk of electric shock.
Quick Coupler with 1/4 female thread
Quick Coupler with 1/4 male thread
There are other different kinds of couplers,please see the following photos.