Summary and Suggestions:

Inner Diameter 2mm:
Suitable for users with high printing accuracy requirements. Smaller gap can reduce filament fluctuations, ensuring more stable filament feeding in high-resolution printing jobs with high detail requirements.
Compatible with all 1.75 mm filaments, especially suitable for printing flexible filaments (TPU, TPE).
If your printing needs are high flow and high speed printing, a tube with an inner diameter of 2mm may restrict the filament flowability. This may cause greater resistance during filament feeding, especially when conveying over long distances.
Suggestions to use a tube with a larger inner diameter (ID 2.5mm or 3mm) to ensure sufficient flow and avoid blockage and uneven extrusion during printing.

Inner Diameter 2.5mm:
The inner diameter of the tube is appropriately increased, while ensuring good printing accuracy and filament flowability, balancing the risk of clogging and the resistance in filament feeding.
Suitable for high flow and high-speed printing. Compatible with all 1.75mm filaments, suitable for most 3D printing needs.

Inner Diameter 3mm:
Due to the larger inner diameter, the filament flowability more high, making it suitable for long-duration printing or applications requiring reduced feeding resistance. Suitable for rigid filaments (such as PLA, ABS, PETG, TPU, PC, Nylon, etc.)
Note: Too large a gap may cause the filament wobbling, resulting in uneven feeding, which is not suitable for high-precision requirements or flexible filaments.
Please choose according to your needs.

After-sales guarantee: each defective item can be replacement for free or refund.
If any question, please feel free to contact us, Newwish 3D is committed to providing you with the best service!

Package Includes:
1.2 Meters PFA Tube (ID 2mm OD 4mm)