Abstract: A smooth pouring spout for attachment to a container having an opening in a upper wall thereof, has a device for locking and sealing the spout to the container. The pouring spout includes two component parts. A flat ring is adapted to surround the opening with the ring having radially inwardly directed flexible fingers and a spout member is insertable through the ring and the opening in the container to flex the fingers into a gripping relationship with a continuous edge of the container surrounding the opening. The spout member includes a large passage through which liquid can be removed from the container while air is introduced into the container through a smaller passage.