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LEGO Red Technic Pneumatic Cylinder Old 48mm with Black Piston (4 Studs Long) | Brick Owl - LEGO Marketplace
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Amazon.com: Goshfun 19Pcs 10-Kinds MOC Pneumatic Parts Bricks with Air Pump Push Rod Switch Piston Air Pipe, DIY Small Particle Stem Building Blocks Toy Set Compatible with Lego, Random Color of Air
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Three LEGO motors, 17 LEGO pneumatic cylinders and a pinch of engineering magic - The Brothers Brick | The Brothers Brick
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BrickLink - Part 21828c01 : LEGO Pneumatic Cylinder V2 1 x 11 [Pneumatic] - BrickLink Reference Catalog
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