A siphon starter for 5 and 6½ gallon carboys. Includes a plunger tube with sealing synthetic food grade cup (to fit our 1/2" interior diameter transfer tubing). Just pull the plunger tube back, install transfer tubing on the curved end, place in a full carboy, and press the plunger forward to start a siphon. A great aid for siphoning from carboys. Siphon tubing not included, order below. 28” long, 1” diameter.