Quickly and safely swap out air tools with Quick Disconnect Couplers. When paired with matching plug, provides for quick tool change without need to shut off air supply. Internal valve spring safely shuts off air flow when disconnected from plug, preventing air leaks. 6-in-1 Universal Coupler features automatic, push-to-connect compatibility with both Industrial Interchange (M-Style) and High-Flow (V-Style) plugs. *Body size must match between plug and coupler.