Racking tubes are made of rigid plastic. Lower into the container to be racked and support it with a siphon tube holder or a bucket clip for a self-adjusting siphon tube. We have found the bucket clip to work as well as the siphon tube holder with carboys. A removable plastic foot helps to avoid picking up sediment from the bottom of the container. Attach 3/8" PVC tubing (not included) to complete an inexpensive yet effective siphon system.