Home » 3/8″ x 1/4″ Black Rubber Air Hose 3/8″ x 1/4″ Black Rubber Air Hose Specifications Black rubber air hose 250 PSI working pressure 1000 PSI bursting pressure 3/8" inside diameter, 1/4" male brass fittings Lengths: 25', 50', & 100' Description 25' x 3/8" x 1/4" 50' x 3/8" x 1/4" 100' x 3/8" x 1/4" Item Number 25BLK 50BLK 100BLK