OEMTOOLS High Flow Couplers and Plugs feature a non-restrictive design that flows twice as much air than conventional couplers. Since the air runs through more freely, this means you are getting better performance from your air tools. Changing out air tools is easy thanks to the one hand push to lock design. If you have HVLP spray guns or high torque impact wrenches, these high flow couplers and plugs are a must since they deliver the highest air volume with the lowest pressure drop.