Best Pieces for Hose System? - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
![Amazon.com: Goshfun 32Pcs 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 Amazon.com: Goshfun 32Pcs 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](https://m.media-amazon.com/images/I/61LO-rtSR4L.jpg)
Amazon.com: Goshfun 32Pcs 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
![LEGO Transparent Light Blue Pneumatic Pump with Black Finger Knob (63856 / 74720) | Brick Owl - LEGO Marketplace LEGO Transparent Light Blue Pneumatic Pump with Black Finger Knob (63856 / 74720) | Brick Owl - LEGO Marketplace](https://img.brickowl.com/files/image_cache/larger/lego-transparent-light-blue-pneumatic-pump-with-black-finger-knob-63856-74720-28-343670-101.jpg)
LEGO Transparent Light Blue Pneumatic Pump with Black Finger Knob (63856 / 74720) | Brick Owl - LEGO Marketplace
![LEGO Red Pneumatic Pump (Old Style) 48mm with Black Piston (4 Studs Long) and Spring | Brick Owl - LEGO Marketplace LEGO Red Pneumatic Pump (Old Style) 48mm with Black Piston (4 Studs Long) and Spring | Brick Owl - LEGO Marketplace](https://img.brickowl.com/files/image_cache/larger/lego-red-pneumatic-pump-old-style-48mm-with-black-piston-4-studs-long-and-spring-28-131791-81.jpg)
LEGO Red Pneumatic Pump (Old Style) 48mm with Black Piston (4 Studs Long) and Spring | Brick Owl - LEGO Marketplace
![BrickLink - Part x191c01 : LEGO Pneumatic Pump Small (5.5L) [Pneumatic] - BrickLink Reference Catalog BrickLink - Part x191c01 : LEGO Pneumatic Pump Small (5.5L) [Pneumatic] - BrickLink Reference Catalog](https://img.bricklink.com/ItemImage/PN/3/x191c01.png)
BrickLink - Part x191c01 : LEGO Pneumatic Pump Small (5.5L) [Pneumatic] - BrickLink Reference Catalog
![Amazon.com: Build 35 Piece Pneumatic Kits with Technik Parts Contains Air Pump, Piston Pressure Rod, Air Lines, Pneumatic Parts Perfect for DIY, MOC Tech, Compatible with Lego : Toys & Games Amazon.com: Build 35 Piece Pneumatic Kits with Technik Parts Contains Air Pump, Piston Pressure Rod, Air Lines, Pneumatic Parts Perfect for DIY, MOC Tech, Compatible with Lego : Toys & Games](https://m.media-amazon.com/images/I/61TFPncGG8L.jpg)