Product name:TWO TREES 3PCS 1Meters Blue PTFE Tube + 3 PC4-M6 Pneumatic Connector + 3 PC4-M10 Connectors for 3D Printer 1.75mm Filament Introdcutions: - This is the kit with 3PCS PTFE Tube 3xPC4-M6 Pneumatic Connectors 3xPC4-M10 Connectors. - Compatibility: Compatible with all 1.75mm PLA ABS 3D printers - Installation: Connection through the external thread of the quick connection. - Disassemble: Press and hold the blue or black end of the quick coupling and pull the pipe out. - Attention: small 3D printer accessories, please keep away from children. Specifications: PTFETeflon tube: 1. Material: PTFE (Poly Tetra Fluoro Ethylene) 2. Outer diameter: 4mm. 3. Inner diameter: 2mm. 4. Density: 2.15 - 2.20 g/cm3 5. Heat Resistance: Up to 260C 6. Length: 1m PC4-M6: 1. Inner diameter (blue end): 4mm. 2. Thread: M6/3mm. 3. Material: copper. 4. It supports 360 rotation. Free, easy to disassemble. PC4-M10: 1. Inner diameter (black end): 4mm. 2. Thread: M10/6mm. 3. Material: stainless steel. 4. Widely used for connection extruder, PTFE fittings. Package included: 3 x PTFE Tube 3 x PC4-M6 Connector 3 x PC4-M10 Connector