BrickLink - Part 73590c02a : LEGO Hose, Flexible 8.5L with Tabbed Ends (Ends same color as Tube) [Hose] - BrickLink Reference Catalog
Lego Hose Black Flexible Round Ends Vintage Classic Spaceships x 1 | eBay
part identification - What is this brown flexible wire with 5 sliding pieces? - Bricks
BrickLink - Part 73590c03a : LEGO Hose, Flexible 8.5L with Tabless Ends (Ends same color as Tube, ends not removable) [Hose] - BrickLink Reference Catalog
BrickLink - Part 57539 : LEGO Hose, Flexible Ribbed with 8mm Ends 19L / 15.2cm [Hose] - BrickLink Reference Catalog