This Plastic 30mm vent hose bulkhead connection allows your seperatly bought 30mm vent hose( pt number GI-ACCS-027 ) to be passed throught floor or body work when routing the gas pipes out of the vehicle from say a fillpoint or other internal gas item.
You need to drill a 30mm hole to put the bulkhead fitting into then the 30mm vent pipe goes over this allows the gas pipe routed in the vent hose to safely pass through bodywork and also should there be a leak, allow any leaking gas down and out.
