All brass. . Our products are named for its high standard, durability, stability and trust among our users. We also aim for quality, innovation and user satisfaction and we work towards achieving them every day to make our product up to date. FeaturesQuick Coupler - FemaleUniversal DesignSpecificationsNPT In : 1/4Dimension: 5.25" W x 2.5" H x 5.25" LWeight: 0.2026 lbs- SKU: ORGL100164