3 Meters PTFE Tube Kit ID 2mm X OD 4mm,Black PTFE Teflon Bowden Tube for 1.75mm Filament,3D Printer Tubing with PC4-M6 Connector X5,PC4-M10 Pneumatic Fittings X5,Bowden Coupler Collet X5.

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 1.75mm filaments, especially suitable for printing flexible filaments (TPU, TPE). Note: Not suitable for high-flow, high-speed printing, Not suitable for Bambu-Lab series 3D printers. 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. Suitable for Bambu-Lab series 3D printers. 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. Package Includes: 3 Meters Black PTFE Tube (ID 2mm OD 4mm) Tube Cutter X 1 PC4-M6 Pneumatic Fittings Set X 5 PC4-M10 Pneumatic Fittings Set X 5 Bowden Collet Set X 5

• PTFE Tube: We strive to choose better materials, slower production rates, so that this tube has high-temperature resistance and more precise tube diameters,capable of withstanding elevated working temperatures without compromising its physical performance. It also demonstrates high chemical stability, resisting corrosion from various substances, and has a low friction coefficient.
• Specification: High Temperature PTFE Tube, Heat-Resistant (260℃+), ID 2mm OD 4mm for 1.75mm filament. Exact inner diamete can reduces the "Wobble space," or buckling, inside the tube, allowing you to print flexible filaments even on the longest Bowden systems.
• Smooth Interior: The smooth inner space will more effectively reduce the frictional resistance of the filament inside the tube. All kinds of filament can be pushed smoothly without causing blockages！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!
• High Precision: ID 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 1.75mm filaments, especially suitable for printing flexible filaments (TPU, TPE). Note: Not suitable for high-flow, high-speed printing, Not suitable for Bambu-Lab series 3D printers.
• Pneumatic Connectors: PC4-M6 with M6/3mm threads, ID 4.2mm; PC4-M10 with M10/6mm threads, ID 4.2mm; Bowden coupler: ID 4.2mm. All of the above connectors are compatible with 4mm outer diameter tube, stable and durable, easy to replace, and high compatibility – this will become a practical spare part or replacement part for your 3D printer extruder and hotend.