Push-lock 1/4" Stainless Steel Coupler MaleWhat is a 1 4" Coupler? 1 4" Couplers have been around for years, usually made from brass or stainless steel they are designed to work with all 1 4" plugs to create a quick release system for pressure washing accessories. you've likely used one before with a foam cannon or a quick release nozzle. Why are the push lock couplers better? Normal 1 4" couplers require two hands to operate, which can be fiddly and annoying! These new Push Lock Couplers