LEGO MOC Vertical Lego Pneumatic Engine by Nico71 | Rebrickable - Build with LEGO
Anyone else into Pneumatics? I believe I have every pneumatic set- education ones not pictured. (Apologies for rubbish photos display needs improvement ) : r/lego
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