LEGO Technic Pneumatic Cylinder, No. 19467c01, V2, No. 19478, 26656, 1 PER ORDER | eBay
LEGO Red Technic Pneumatic Cylinder Old 48mm with Black Piston (4 Studs Long) | Brick Owl - LEGO Marketplace
MOC Bricks Technical Parts Pneumatic Pump Small (6L) V2 with Reinforced Cylinder 19476 19482 19475 Compatible Leduo 8800 Blocks - AliExpress
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