Pneumatic Tube (Hose) : Original Box 5102-1 | BrickLink
LEGO 5102 Technic Pneumatic Tube Black and Grey 60 and 100 cm | BrickEconomy
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
Hose compatible with Lego Pneumatic Parts (air,tank,cylinder,pump,technic,car) | eBay
Pneumatic Hose BLACK (5 meter) | BRICKshop - LEGO en DUPLO specialist
Pneumatic KIT 2 with cylinders,pump,switch,etc (Hose is compatible with Lego) | eBay
LEGO part 5102c80 - Black Hose, Pneumatic 4mm D. 80L / 64.0cm at BrickScout
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
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