Authentic Capricorn PTFE Bowden Tubing (1 Meter) XS Series for 1.75mm Filament with PTFE Teflon Tube Cutter and Upgraded PC4-M6 and PC4-M10 Pneumatic Fittings with Metal Teeth and Blue Collet Clip

This upgrade bundle is not only great value for money, it is also guaranteed to give immediate improvements to your printing experience due to every single item included being far superior to the cheap Chinese stock counterparts that came with your printer. The high manufacturing standards for Capricorn PTFE tubing ensure that all tolerances are very tight and uniform through the length of the Bowden tube. Many cheap printers come with sub-par PTFE not designed for 3D printers and this can result in poor extrusion and poor retraction artifacts on your 3D printed models. The upgraded fittings with metal teeth ensure the PTFE tubing will not pull out once firmly grasped by the upgraded stainless steel fittings. NOTICE: THIS BUNDLE OF PARTS CONTAINS A RANGE OF PARTS, INCLUDING CAPRICORN PTFE TUBING, AND SOME OTHER PARTS SOURCED BY F1RST LAYER WHICH, AFTER EXTENSIVE TESTING, HAVE PROVEN TO PROVIDE BETTER PERFORMANCE THAN STOCK PARTS ON MANY CHINESE MANUFACTURED PRINTERS. NOT ALL PARTS IN THIS PACKAGE ARE MANUFACTURED BY CAPRICORN.

Product Features

  • Capricorn PTFE is well regarded as the highest quality PTFE tubing in all of 3D printing. The tight tolerances make sure that the filament is lead directly to the hotend with as little room for error as possible between the extruder and the hotend.
  • Capricorn PTFE XS Series is rated for withstanding the highest temperatures in the market which is perfect for printing exotic filaments such as ABS, Nylon, and Polycarbonate. Standard PTFE tubing may experience dangerous “off-gassing” if the hotend is heated to temperatures beyond 240*C and will get worse with higher heats. This Capricorn XS series is safe in 3D printer usage up to 300*C thanks to its proprietary manufacturing methods.
  • Upgraded Pneumatic Fittings with metal teeth provided in this package work much better than the stock options provided by many cheap 3D printer manufacturers with plastic teeth or cheap locking mechanisms. The extruder fittings are PC4-M6 and the hotend fittings are PC4-M10. A clip is also provided which drastically increases any hotends precision by eliminating any potential slippage of the Bowden tubing whilst extruding or retracting.
  • One PTFE cutter with an extra sharp razor is also included to ensure that the PTFE is cut flat on both sides to prevent any malfunctions or heat creep when feeding and retracting.
  • 1 Meter in length PTFE tubing

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Aokin 2 Pcs Teflon Tube PTFE Tubing (1.5 m/Pcs) with 4 Pcs PC4-M6 Fittings and 4 Pcs PC4-M10 Straight Pneumatic Fitting Push to Connect for 3D Printer 1.75mm Filament

Teflon Tube:


Color: Blue

Length: 3m (1.5m/Pcs)  

Outside Diameter: 4mm

Inside Diameter: 1.95mm ± 0.05mm  


Smooth surface, Non-stick & Corrosion resistance.

Environmentally friendly and pollution-free & Durable.

Self-lubricating: can convey materials smoothly with the smallest friction coefficient. 

High&low temperature resistance: usable temperature -190℃~260℃, almost unaffected by temperature.

An extremely precise internal diameter can reduce the “wiggle room,” or buckling, inside the tube, allowing you to print flexible filaments even on the longest Bowden systems.



1.PC4-M6 fitting

Inner diameter(blue end): 4mm 

Thread: M6/3mm 

Material: copper and plastic 

Color: golden+blue 

2.PC4-M10 fitting

Inner diameter(black end): 4mm 

Thread: M10/6mm 

Material: stainless steel and plastic 

Color: black+silver 


Widely applied for connecting extruders, PTFE fittings. 

Pneumatic fitting supports turn 360 freely, Easy to install and remove.

2 end connections of quick fittings are able to bear greater and stronger impulse but won’t come off.


Install: connecting by the outer thread of the quick fitting. 

Compatible with all 1.75mm PLA ABS 3D printer and other devices.

Remove: press and hold the blue or black end of the quick fitting and pull out the tube. 

Aokin 3D printer accessories use high-quality raw materials and fine workmanship, If you have any question for our product, please feel free to contact us, we will do our best for you.

Product Features

  • Blue Teflon Tube: be made of durable PTFE material, safe and odor-free, non-stick surface, self-lubricating, insulation, non-combustible, high and low-temperature resistance, corrosion resistance; Inside diameter 2mm, outside diameter 4mm.
  • PC4-M10 fitting: stainless steel and plastic material, anti-oxidation, anti-corrosion, and high hardness; Thread M10/6mm, inner diameter(black end) is 4mm, fit for the tube whose outer diameter is 4mm.
  • PC4-M6 fitting: copper and plastic material, durable and sturdy; Thread M6/3mm, inner diameter(blue end) is 4mm, fit for the tube whose outer diameter is 4mm.
  • Compatibility: can be compatible with all 1.75mm PLA ABS 3D printer and other devices.
  • Easy to Install: connecting by the outer thread of the pneumatic fitting.

Detailed Information available on our Homepage…

SIQUK 5 Pieces Teflon Tube Blue PTFE Tubing (1M) with 10 Pieces PC4-M6 Fittings and 10 Pieces PC4-M10 Fitting Connector for 3D Printer 1.75mm Filament

SIQUK 5 Pieces Blue PTFE Tube with 10 Pieces PC4-M6 Fittings and 10 Pieces C4-M10 Fittings for 3D Printer 1.75mm Filament

Teflon tube
Material: PTFE (Poly Tetra Fluoro Ethylene)
Outside Diameter: 4mm
Inside Diameter: 2mm
Density: 2.15-2.20g/cm3
Color: Blue
Heat resistance: up to 260℃
Length: 1m

PC4-M6 Fittings
Inner diameter(blue end): 4mm
Thread: M6/3mm
Material: copper and plastic
Color: golden+blue

PC4-M10 Fittings
Inner diameter(black end): 4mm
Thread: M10/6mm
Material: stainless steel and plastic
Color:black + silver

Easy to Disassembly 
Press and hold the blue or black part of the quick fitting and pull out the tube.

Attention: Small parts, keep away from children.

package including:
5 x1M PTFE Tube(2.0mm ID/4.0mm OD) 
10 x PC4-M6 Fittings
10 x PC4-M10Fittings

Product Warranty

SIQUK are devoted to offer premium quality products to all cherished customers. Meanwhile supply 45 days money back guarantee and 18 months warranty.

If there are any questions, please feel free to contact us, SIQUK Customer Service Team will spare no efforts to assist with you within 24 hours.

Product Features

  • PTFE Blue Tubing – the blue color teflon tube outside diameter 4mm, inside diameter 2mm, density 2.15-2.20g/cm3
  • PC4-M6 fittings – thread M6/3mm, inner diameter(blue end) 4mm, fit for the tube whose outer diameter is 4mm
  • PC4-M10 fittings – thread M10/6mm, inner diameter(black end) 4mm, fit for the tube whose outer diameter is 4mm
  • Premium Material – the teflon tube made of durable PTFE (Poly Tetra Fluoro Ethylene) material, PC4-M6 Fittings is made of Copper; PC4-M10 Fittings is made of stainless steel
  • Attention – small 3D printer accessories, please keep away from children

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