1、PTEE tube: outer diameter 4mm, inner diameter 2mm; density 2.15-2.20g / cm3; it is made of high quality PTFE (Poly Tetra Fluoro Ethylene) material, safe and non-toxic, heat resistance up to 260 °C. 2、PC4-M6 accessories: thread M6 / 3mm, inner diameter (blue end) 4mm, suitable for tubes with outer diameter 4mm, fittings made of high quality copper and plastic, durable. 3、PC4-M10 accessories: thread M10 / 6mm, inner diameter (black end) 4mm, suitable for tubes with outer diameter 4mm, fittings made of stainless steel and plastic, high hardness, anti-oxidation, anti-corrosion. 4、Compatibility: Compatible with all 1.75mm PLA ABS 3D printers. 5、Installation: easy to install with external threaded connection of quick coupling. Package Included: 2 Pieces PTFE PTEE Tube (1 Meters) + 4 Pieces PC4-M6 Quick Fitting + 4 Pieces PC4-M10 Straight Pneumatic Fitting Push to Connect for 3D Printer 1.75mm Filament Features: 1. PTEE tube: outer diameter 4mm, inner diameter 2mm; density 2.15-2.20g / cm3; it is made of high quality PTFE (Poly Tetra Fluoro Ethylene) material, safe and non-toxic, heat resistance up to 260 °C. 2. PC4-M6 accessories: thread M6 / 3mm, inner diameter (blue end) 4mm, suitable for tubes with outer diameter 4mm, fittings made of high quality copper and plastic, durable. 3. PC4-M10 accessories: thread M10 / 6mm, inner diameter (black end) 4mm, suitable for tubes with outer diameter 4mm, fittings made of stainless steel and plastic, high hardness, anti-oxidation, anti-corrosion. 4. Compatibility: Compatible with all 1.75mm PLA ABS 3D printers. 5. Installation: easy to install with external threaded connection of quick coupling. Specification: Condition: 100% Brand New Weight: Approx. 78 g PTFE PTEE Tube Specification Material: PTFE (polytetrafluoroethylene), Density: 2.15-2.20g / cm3 heat resistance, up to 260 °C Outer Diameter: 4mm, Inner Diameter: 2mm White Color Length: Approx. 1 meters PC4-M6 Accessories Specifications PTFE Tube Outer Diameter: 4mm Thread: M6 / 3mm Material: Copper, Plastic Color: Gold + Blue It supports 360 degree rotation and is easy to disassemble PC4-M10 Accessories Specifications PTFE Tube Outer Diameter: 4mm Thread: M10 / 6mm Material: Stainless Steel, Plastic Color: Black + Silver Widely used to connect Bowden extruders, PTFE fittings Easy to disassemble Press and hold the blue or black part of the quick connector and pull out the tube Note: small parts, away from children Package List: 2 * 1M PTFE PTEE Bowden Tube (2.0mm ID / 4.0mm OD) 4 * PC4-M6 Connector 4 * PC4-M10 Accessories Note: 1.Please allow 1-3 cm error due to manual measurement. Thanks for your understanding. 2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.