Quickun Pneumatic Tubing 12mm x 8mm PU Polyurethane Tube Air Hose Line for Air Compressor Fitting or Fluid Transfer (Blue 32.8ft/10Meters) - - Amazon.com
Sheepo's Garage: Alternative parts for rare soft axles
Pneumatic Hose BLACK (5 meter) | BRICKshop - LEGO en DUPLO specialist
LEGO Blue 4mm Diameter Pneumatic Hose 27.2 cm | Brick Owl - LEGO Marketplace
Sheepo's Garage: Alternative parts for rare soft axles
Pneumatic Tubes and Pieces : Set 5109-1 | BrickLink
LEGO elemento 5102c03 - Dark Bluish Gray Hose, Pneumatic 4mm D. 3L / 2.4cm su BrickScout
Pneumatic Wheel
Lego compatible pneumatic tube
Quickun Pneumatic Tubing 4mm x 2.5mm PU Polyurethane Tube Air Hose Line for Air Compressor Fitting or Fluid Transfer (Black 32.8ft/10Meters) - - Amazon.com