This simple yet sophisticated set offers wholesome play possibilities that will challenge imagination, inspire observation, stimulate reasoning and logical thinking. The Erector 20 model set features a 3 Volt motor and gear box designed to make construction easier than ever. This set also features a plethora of parts including moving parts that will inspire builders to design and create ingenious movement. The possibilities for design construction are virtually endless. Truly a motorized work of art for the novice Erector engineer. 

• Designed for Ages 8+
• Only one toy may be built at a time.
• Includes 261+ parts including moving parts and building tools.
• 3 Volt motor and gear box designed to make construction easier.
• Includes a plethora of shiny steel girders, plates, nuts & bolts and wheels.
• Includes illustrated instructions that depict a varitey of cool designs. Builds 20 models.
• Everything you need is included to build a world of moving creations; a dragster, ditch digger, helicopter, hot rod and more.