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3Dman Transparent dual drive Bowden extruder, 3:1 gearing

A transparent dual drive Bowden extruder from 3DMAN with 3:1 double-gear reduction, gears gripping the filament from both sides and a spring device to set their pressure, for Ender, CR-10, Mega S and Prusa i3 3D printers.

Transparent extruder labelled Dual Drive Extruder, two gears visible inside, with tension screw, spring and two hex keys

3Dman Transparent dual drive Bowden extruder, 3:1 gearing

A transparent dual drive Bowden extruder from 3DMAN with 3:1 double-gear reduction, gears gripping the filament from both sides and a spring device to set their pressure, for Ender, CR-10, Mega S and Prusa i3 3D printers.

Printer fit
Ender 3 V2, Ender 3 Pro, Ender 3 series, Ender 5 Pro, Ender 5 Plus, CR-10 series, Anycubic Mega S, Tevo Tornado, Wanhao D9, Anet A8 E10, Prusa i3 and DIY 3D printers, fourth bullet
Direct drive or Bowden
Bowden, title and second bullet
Gear ratio
3:1 double-gear reduction, third bullet
Drive gears
Dual drive gears gripping the filament from each side, with a spring device to fine-tune their pressure, second and fifth bullets
Filament path
Absent from the listing — the transparent body shows how it works, first bullet
Weight
Absent from the listing
Firmware figure
Absent from the listing
Amazon reference
B09NM1JL22 (same reference on 5 Amazon marketplaces)
EAN
0755738197422
  • A transparent body that shows the gears working
  • Gear ratio stated: 3:1
  • No E-steps value

Best for: An Ender 3 or CR-10 owner fitting a geared Bowden extruder who wants to see the filament feeding.

≈ £11 / 16 €
Check price on Amazon

Specifications

Printer fit
Ender 3 V2, Ender 3 Pro, Ender 3 series, Ender 5 Pro, Ender 5 Plus, CR-10 series, Anycubic Mega S, Tevo Tornado, Wanhao D9, Anet A8 E10, Prusa i3 and DIY 3D printers, fourth bullet
Direct drive or Bowden
Bowden, title and second bullet
Gear ratio
3:1 double-gear reduction, third bullet
Drive gears
Dual drive gears gripping the filament from each side, with a spring device to fine-tune their pressure, second and fifth bullets
Filament path
Absent from the listing — the transparent body shows how it works, first bullet
Weight
Absent from the listing
Firmware figure
Absent from the listing
Amazon reference
B09NM1JL22 (same reference on 5 Amazon marketplaces)
EAN
0755738197422

The 3DMAN extruder listing, bullet by bullet

Five bullets: a transparent design to see how it works; dual drive gears gripping the filament from each side for extrusion force, smooth feeding and snappy retractions; a 3:1 ratio with double-gear reduction for stable feeding without slipping and more torque; compatibility with Ender 3, Ender 5, CR-10, Mega S, Tornado, Wanhao D9, Anet A8 E10 and Prusa i3 3D printers; and a spring device to fine-tune gear pressure when changing materials.

Seeing through the 3DMAN body

Transparent, as the first bullet says. A clear housing shows whether the gears are biting or grinding, which is otherwise hidden inside the extruder. The product photograph shows both gears through the housing, with two hex keys beside it.

3DMAN and Iverntech side by side

Both are dual drive Bowden extruders at 3:1, and both name the CR-10, Mega S, Tevo Tornado, Wanhao D9, Anet A8 E10 and Prusa i3; 3DMAN adds Ender 5 models. Iverntech gives 385 E-steps; 3DMAN gives the transparent body and no E-steps figure.

Availability

At the last look-up, the German, French, Italian and Spanish Amazon stores were asking 16 € to 18 €.

It is sold in the British Amazon store as well, in its own currency, which the euro figures above leave out on purpose.

The American Amazon store returned no entry, so the buy button there opens a search rather than a missing page.

Every figure here is Keepa’s reading on the date this page was last updated. Stock and prices can change at any time.

Prices quoted in this text were read on 15 September 2026. The live price is at the top of the page.

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