SPEEDAIRE pneumatic breather vents are ideal for relieving build up pressure in cylinders, gearboxes and storage tanks. They further prevent the ingress of dirt and particles from entering ports open to the atmosphere. The low-profile nickel-plated steel construction inserted easily into ports. They feature a 40-micron bronze element, offering a maximum pressure handling capacity of 150 PSI. Choose from a wide range of these breather vents, available in 1-1/16, 7/16, 7/8, 9/16 and 11/16 inch lengths on Raptor Supplies.