Amazon.com: TEESE 21pcs Pneumatic-Kits Compatible with Lego-Technic-Parts, Piston-Pressure-Rod, Air-Pump-Cylinder-Hose, MOC Car Truck Replacement Parts : Toys & Games
technic - Which sets currently contain pneumatic LEGO equipment? - Bricks
LEGO Set 8464-1 Pneumatic Front End Loader (2001 Technic) | Rebrickable - Build with LEGO
Lego pneumatics - Wikipedia
technic - Which sets currently contain pneumatic LEGO equipment? - Bricks