Thames & Kosmos Remote-Control Machines: Construction Vehicles | Science & Engineering Experiment Stem Kit | Build 8 Real Working Models | Parents’ Choice Silver Award Winner |Astra Best Toys for Kids Price: $53.99 (as of 28/04/2020 15:56 PST- Details)

Explore the physics of force, torque, and simple machines by build 8 models of different construction vehicles
Over 225 interchangeable building pieces
Includes 64-page, illustrated experiment manual and assembly guide