PN#500027  SKU#14299  Reusable Air Hose Fitting, Assembly with Spring. Material: Brass. Pipe Size: 1/4″. Hose Outer Diameter: 3/8″. Designed for use with rubber air break hose. Bodies, sleeves and nuts are all brass construction for durability and corrosion resistance. Zinc-plated steel springs have rounded ends to protect air hose.