Hydraulic operated & geared catapult. Learn the basic concepts of hydraulics and gears.
Made from renewable resources (natural wood and plywood). All parts are included, are machined, and ready for assembly. 
Relatively easy to assemble.
Instruction manual included information about the different gears.
Can be used to launch small objects (popcorn, marshmallows, etc.) .
“ 2016 Toy of the Year Award” for building kits (Creative Child Magazine).
Ages 8+.