This kit is one of the most amazing kits to learn about electronics magnetism robotics and mechanics. Your kid can build more than 125 projects with the booklet and videos provided. The kit is perfectly suitable for endless innovations. The kit includes 70+ components as shown in the images including LEDs Motor Buzzer Batery Cell Holder Connector Magnt switch fan wires nut-bolts resistor transistor screw driver etc. The booklet is also provided with the kit.