Ready, Set, Take Off! With Smartivity's Hydraulic Plane Launcher, experience the thrill fo flight from a launcher you build! Powered only by hydraulic pressure, watch your plane fly. The set includes foldable paper with markings to make different types of planes and how they have different flight patterns. No batteries, glue or tools are needed!Use hydraulics to launch a plane.Make a variety of different planes includedPowered only by water and pressure.Experience different plane flight paths.No batteries required. Recommended Ages: 6 Years And Up Measurements: 13.39 Length/Inches Base Material: 100% Plastic Care: Wipe Clean Country of Origin: Imported p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 15.0px Calibri; -webkit-text-stroke: #000000} span.s1 {font-kerning: none} WARNING: CHOKING HAZARD – small parts. Not for children under 3 years.