Grow into this 100-piece deluxe set or use it as a starter set. This gears set will help usher your child into the world of engineering games as they discover endless building possibilities. Our gears are made to challenge motor skills, creativity, and hands-on construction play, so get ready to to snap these sturdy plastic pieces into place and create something amazing. Compatible with all other Gears!Gears!Gears!® sets for even more imaginative fun. Includes 46 colorful gears (blue, green, orange, red, purple), 26 square pillars, 21 six-way axles, 6 interlocking bases, 1 crank handle and an activity guide. For ages 3 and up, Grades PreK and up.