LEGO Pneumatic 40-pc Parts Set New (Manometer,Pump,Switch,Technic,Piston) | #1852834015
BrickLink - Set 9641-1 : LEGO Mechanisms Pneumatics Add-On Set [Educational & Dacta:Technic:Supplemental] - BrickLink Reference Catalog
LEGO® Multi Model Pneumatic Set (8042): all details
Buy 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