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The exclusive inverted blaster motor launches your hanging coaster car on an out-of-this-world adventure through 18 feet of track
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The enclosed step-by-step colour-coded instruction book showcases 50 unique models of varying size and difficulty
Encourage creative play with this K'NEX toy construction set ideal for adults
K'NEX Big Ball Factory building set K'NEX sets The exclusive inverted blaster motorBuild a classic, nostalgic K'NEX model just like you remember with the 20th Anniversary Big Ball Factory. After 20 years in the K'NEX vault, we are bringing back this classic model to thrill our most loyal fans. Over 3,100 Classic K'NEX pieces complete this gigantic ball machine that stands over 1. 2m (4 feet) high. Watch as the 4 balls travel down 5 different paths which way will the ball go next? Just turn the motor on and watch it go! Included are