Hose, Flexible 12L with Tabbed Dark Bluish Gray Ends : Part x131c | BrickLink
LEGO® 78c12 4164468 - 4523640 - 6253280 - ToyPro
Bricker - Part LEGO - 73590c02a Hose, Flexible 8.5L with Tabbed Ends (Ends same color as Tube)
Amazon.com: TEESE 21pcs Pneumatic-Kits Compatible with Lego-Technic-Parts, Piston-Pressure-Rod, Air-Pump-Cylinder-Hose, MOC Car Truck Replacement Parts : Toys & Games
Hose Flexible Blocks | Flexible Hose 73590 | Moc Flexible Hose | Building Blocks - 10pcs - Aliexpress
Lego Parts: Hose, Ribbed 7mm D. 2L (PACK of 4 - Flat Silver) – Wholesale~BricksandFigs
Alternative to LEGO Hose, Rigid 3mm. Compatible Flex Tube for Brick Models - Etsy
LEGO PART 75c08 Hose Rigid 3mm D. 8L / 6.4cm | Rebrickable - Build with LEGO