Texas Pneumatic Tools breather vents easily insert into cylinders, gearboxes, and storage tanks to vent excess pressured gasses to protect them from bursting in commercial and industrial applications. These vents feature nickel-plated steel construction with standard pipe thread fittings for easy installation and removal for cleaning. They have 20 / 40 / 90 micron filter element for preventing the entry of dirt and particles into the open atmosphere ports. Choose from a wide range of these breather vents, available in sizes ranging from 1/8 to 1-1/2 inches.