From the product description, check product page for current description, price and availability:

No more struggling with different techniques to get a siphon started! Get an Easy Siphon and you won’t have to worry about it anymore; one pump and the siphon is running. Talk about Easy!

Comes with 1/2″ cane. 1/2″ tubing must be purchased separately. Moves more beer in less time than the 3/8” version.

Instructions:
Sanitize and rinse your Easy-Siphon.
Get the inner tube gasket and the outer tube wet.
Attach the curved siphon to a hose.
Submerge the end of Easy-Siphon into your container.
If bottling directly, attach the correct bottle for the tubing you are using and place it inside your bottle wand. Otherwise place the the tubing into the container you’re racking to.
Pull the inner tube up about 7″ until the liquid fills the tube.
Pump the inner tube down and siphon will begin.
Pull out inner tube and sanitize Easy-Siphon for storage.