Excavators are big machines that are used to dig holes and move earth, and this model uses the same principles as those used in real situations, except you use water instead of hydraulic fluid.

There are many types of excavators and this kit uses a first and third class lever to make the arm and shovel move. We think it provides an excellent example of how we use technology to dig things up.

Great for kids to learn about hydraulics, levers and simple machines, and to finish small excavating projects around the house. Simple to build in less than an hour, you need only a pair of scissors to make this fun and functional model. Great for kids 8 and up.

The single kits will be discontinued once supply runs out. They will only be sold in the 4 kit 83-5054-04.