Swivel safety coupling with free passage. The plug is inserted into the coupling body and the connection is made with a movement of approximately 90°. Once the red ring clicks into the designated groove, a secure connection is established. To disconnect, the red ring must be pulled back and the plug swung back to the stop position. A venting hole on the back of the coupling allows for venting during disconnection. This coupling complies with the ISO standard DIN EN ISO 4414, EN 983. This safety coupling is not suitable for direct mounting on pulsating tools. We recommend using our vibration dampers according to ISO 6150, § 7.1. Areas of application: Pneumatics, machine and plant engineering, measurement, control and automation technology, manufacturing industry, workshops, automotive. Features: Threaded part: galvanized steel, sleeve: zinc die-cast, nickel-plated, red, rubber-coated, medium: compressed air, gases, nominal width: 7.2, plug profile: EURO 7.2.