Cylinder 3 x 6 x 2 2/3 Horizontal - Round Connections Between Interior Studs : Part 30360 | BrickLink
LEGO White 3x6x2 2/3 Space Air Craft Cylinder Engine Part New | eBay
Modified Pneumatic Cylinder - Medium - Metal Shaft – Green Gecko Workshop
4 Lego Pneumatic LARGE Cylinders (technic,excavator,long,crane,system,V2-Ver.2) | eBay
Amazon.com: Domani Technic Spare Parts Crankshaft Engine Connecting Rod Engine Cylinder Head Bricks Sets Compatible with Lego Technic Parts - 67 Pieces : Toys & Games
LEGO Reddish Brown Brick 1 x 1 Round with Open Stud (3062) | Brick Owl - LEGO Marketplace
1-Stud Round Storage Brick – Yellow 5006999 | Other | Buy online at the Official LEGO® Shop US