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Two red PTFE tubes, 3.2 ft each, 2 mm inner diameter, 4 mm outer diameter

Unique-Bargains

Unique-Bargains PTFE Tube 3.2Ft Red 2pcs 1.75mm Filament

SKU CH-QR0D-KACD2

PTFE tubing with a 2 mm bore guides 1.75 mm filament through hot ends on most common 3D printers

  • Precise 2 mm bore guides 1.75 mm filament smoothly
  • PTFE construction resists heat and chemical wear
  • Red colour lets you trace the filament path instantly
  • Two one-metre tubes cover multiple printer upgrades
  • Compatible with Anet, RepRap, Prusa and most 3D printers

Bowden tubing for 1.75 mm filament

This PTFE tube set provides two one-metre lengths with a 2 mm inner diameter and 4 mm outer diameter. The precise bore guides 1.75 mm filament smoothly through Bowden extruders on printers such as Anet, RepRap, Prusa and MendelMax models. Red colour coding helps identify the tubing in multi-material setups. Low-friction PTFE reduces drag and resists heat creep during long prints.

Suited to Bowden upgrades and maintenance

Makers converting a direct-drive machine to Bowden or replacing worn liner tubes will find the dimensions match common hot-end fittings. The pack includes two pieces so one can be kept as a spare. Users whose extruders require a different inner diameter or a longer continuous run should seek alternative tubing. Direct-drive configurations that do not use a remote PTFE guide gain no benefit from this product.

Critical spec: 2 mm inner diameter

The 2 mm bore is the single dimension that determines compatibility with 1.75 mm filament and standard push-fit couplers. If a printer’s hot-end or extruder calls for a tighter or looser tolerance, this tubing will not seal correctly. Always verify the required inner diameter against the hardware documentation before ordering.

Highlights

  • Precise 2 mm bore guides 1.75 mm filament smoothly
  • PTFE construction resists heat and chemical wear
  • Red colour lets you trace the filament path instantly
  • Two one-metre tubes cover multiple printer upgrades
  • Compatible with Anet, RepRap, Prusa and most 3D printers

Specifications

BrandUnique Bargains

Questions about this item

How often should the 2 mm ID PTFE tube be replaced when printing with 1.75 mm filament?

Replace the tube when the inner surface shows wear or the filament starts to drag; lifespan varies with temperature and material.

What is the first limitation you hit during long prints with this 1 m red PTFE tubing?

The 2 mm inner diameter can become a bottleneck if filament swells or debris builds up, restricting flow.

Does the 4 mm OD PTFE tube get too hot or noisy when the printer runs all day?

PTFE itself is silent; heat resistance depends on your hot-end design, not the tubing alone.

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