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Amazon.com: LEGO Chain Reactions (Klutz Science/STEM Activity Kit), 9" Length x 1.06" Width x 10" Height : Pat Murphy and the Scientists of Klutz Labs: Toys & Games
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Self Locking Bricks MOC Building Blocks Technical Parts 100pcs CHAIN LINK M=1 compatible with Lego 14696 for Kids Boys Toy|Model Building Kits| - AliExpress
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Probably a dumb question but.. how are lego chains manufactured? They appear to be seamless. : r/lego
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