PN#500025  SKU#14294  Reusable Air Hose Fitting, Assembly with Spring. Material: Brass. Pipe Size: 3/8″. 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.