Starts siphon with a single stroke. Includes a 24" racking tube, bend to perfection. Made out of Acrylic. Racking tube fits a 5/16" x 7/16" siphon hose. Includes the Anti-Sediment Tip. To prolong the life of your Easy Siphon, make sure that every time you assemble the unit, the inner walls of the outside acrylic tube and the O-Ring are wet.