Edu Science Know How? 3-in-1 Hydraulic Set ncludes all pieces required to build 3 different model toys, water tubes, a hand pump, a work platform and instruction/information booklets Kids can create a water-powered model crane, cherry picker and grabber and learn about the science of hydraulics After assembling the model hydraulics machines, use the hand pump to move water through the tubes and control the functions Easy-to-follow instructions booklet has detailed illustrations of each step Package Dimensions: 12 x 10.5 x 2.25 inches