This 1/2 Auto Siphon (5477) has a larger diameter than standard auto-siphons allowing for increased flow for faster transfers. It utilizes an easy pump action to give you the power to easily transfer from one vessel to another with a single stroke. Use of a siphon helps to keep from disturbing sediment during the transfer process. It can be used with both buckets and carboys and only requires a few inches of liquid. Easy to clean and sanitize. Tubing not included.