This item is similar to the curved siphon stem , except it consists of two tubes, one inside the other. By pumping the internal tube you can easily get your siphon going. Simple and excellent tool! Use together with 3/8" tubing.
Sterilize your tubing and this pump, then one stroke and the wine starts to flow! No more filling with water and trying to catch it to get things started and no more sucking on the tubing! It comes apart and cleans easily. One of my smarter acquisitions!