Quickun Pneumatic Tubing 6mm x 4mm PU Polyurethane Tube Air Hose Line for Air Compressor Fitting or Fluid Transfer (Black 32.8ft/10Meters) - Amazon.com
LEGO Black 4mm Diameter Pneumatic Hose 6.4 cm | Brick Owl - LEGO Marketplace
Moc Parts Pneumatic Hose Air Pump Push Rod Putter Switch Piston Air Tank Pump Compatible With Legoeds Pneumatic Building Blocks - Iot Accessories - AliExpress
Hose, Pneumatic 4mm D. 54L / 43.2cm : Part 5102c54 | BrickLink
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® 4697b, 4211508 pneumatic hose, T piece, light bluish gray
Quickun Pneumatic Tubing 6mm x 4mm PU Polyurethane Tube Air Hose Line for Air Compressor Fitting or Fluid Transfer (Clear 32.8ft/10Meters) - Amazon.com