Four reality-based and fully functional industrial robots: High-rack storage, 3-axis robot and 2 other grappler robots. Stable fischertechnik aluminum channels used in all models. The instructional activity booklet provides support in the form of background information, projects and programming tips. IncludesL:  Encoder Motors,  XS Motors,  Sensors, instructional activity booklet on CD and assembly instruction booklet. Requires ROBO TX Controller, Software ROBO Pro, and Energy Set or Accu Set. Ages 10 and up.