To connect to a gas cylinder, you need a gas hose that fits the standard connections. Most gas barbecues use a hose with a 1/4" connection. It is important that the hose is free from kinks and cracks and complies with EN standards. A suitable gas hose could be, for example, the Campingaz gas hose 1/4x1/4 inch 80cm, which is suitable for such connections. Make sure that all connections are screwed tight and carry out a leak test after connection.