Pneumatic Cylinder with 1 Inlet Medium (48mm) : Part 4688c01 | BrickLink
Amazon.com: Build 19 Piece Pneumatic Kits with Technik Parts Contains Air Pump, Piston Pressure Rod, Cylinder,Pneumatic Hose &More,Great for DIY, MOC Tech, Compatible with Lego : Toys & Games
Modified Pneumatic Cylinder - Medium Stud End - Old Style – Green Gecko Workshop
Pneumatic Cylinders Lego | Lego Pneumatic Air Tank | Lego Pneumatic Air Pump - Switch - Aliexpress
LEGO Technic Pneumatic Cylinder, No. 19467c01, V2, No. 19478, 26656, 1 PER ORDER | eBay
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