This kit comes with the following (product list with images):
1x Linkbot-I
1x Linkbot Dongle
3x Snap Connector
2x 3.5" Wheel
2x 4" Wheel
1x Ball Caster
1x Push Scoop
1x 1" Foam Cube Red
1x 1" Foam Cube Green
1x 1" Foam Cube Blue
1x 1" Foam Cube Yellow
1x 36" USB Cable
1x 7" USB Cable
1x 8"x10" Resealable Bag
1 Year Warranty 
 
This kit allows you to quickly get started with learning robotics, coding, science, technology, engineering, and math (STEM) with a Linkbot. You can control the Linkbot wirelessly with wheels of different sizes for various applications.
 
Getting started programming Linkbot with RoboBlockly.
 
The recommended add-ons for this kit are
Ch Professional Edition
Arduino-Compatible Starter Kit
Linkbot Sensor Connection Pack
Robot Sensor Pack
Pan-Tilt Pack