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Best Knex Roller CoasterFrom leading brands and best sellers available on the web.
#2
K’NEX Education STEM Explorations: 3-in-1 Classic Amusement Park Building Set – Multicolor & Motorized, Creative-Learning Construction Model for Ages 9+, Engineering Toy for Boys & Girls, Adults
Basic Fun
9% off
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#3
Thames & Kosmos Roller Coaster Engineering STEM Kit | Design, Build, Experiment w/ Working Roller Coaster Models | Explore Physics, Forces, Motion, Energy, Velocity & More | Solve Building Challenges
Thames & Kosmos
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#4
K'NEX Amusement Park in-A-Box - 378 Parts - Motorized Amusement Rides - Ages 7 & Up
K'NEX
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#5
CDX Blocks: Cyclone - 900+ Pieces, Building Brick Set, Gravity Powered Roller Coaster Model, Promotes STEM Learning
CDX Blocks
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