Moc Parts Pneumatic Hose Air Pump Push Rod Putter Switch Piston Air Tank Pump Compatible With Legoeds Pneumatic Building Blocks - Iot Accessories - AliExpress
LEGO Black 4mm Diameter Pneumatic Hose 27.2 cm | Brick Owl - LEGO Marketplace
Quickun Pneumatic Tubing 8mm x 5mm PU Polyurethane Tube Air Hose Line for Air Compressor Fitting or Fluid Transfer (Orange 32.8ft/10Meters) - Amazon.com
LEGO Black 4mm Diameter Pneumatic Hose 19.2 cm (24 Studs) (1662 / 63540) | Brick Owl - LEGO Marketplace