The Husky 3-Piece Vertical Air Shut-Off Kit includes adapters that connect air compressors with 3/4 in. NPT female ports to standard 3/8 in. hose or piping. Constructed from durable brass with a steel ball and Teflon seals, the kit includes a quarter-turn handle that quickly turns air on and off. The high-capacity airflow design reduces pressure drops for better tool performance.