Safety quick couplers for compressed air. One-step release and exhaust operation quickly vents system pressure allowing for a safe disconnect. Manufactured in Stainless steel, nickel plated brass, NBR and technoplymer. Couplers conform with ISO 6150 B12. Flow capacity: 1.200 l/min. Pressure range: 1 to 15 bar. Connection thread 1/4" BSP.