Amazon.com: LEGO Technic 4 pcs NEW YELLOW MINI PNEUMATIC PISTON CYLINDERS Air pressure Pump pack lot set switch hose small little robot robotics : Toys & Games
Pneumatic Cylinder with 2 Inlets and Rounded End Medium (48mm) : Part 47224c01 | 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
LEGO Technic Pneumatic Cylinder, No. 19467c01, V2, No. 19478, 26656, 1 PER ORDER | eBay
LEGO Transparent Light Blue Two Way Pneumatic Cylinder (47225 / 63855) | Brick Owl - LEGO Marketplace