Description/Features: The quintuple assembly is used to switch filaments during multi-color or multi-filament printing. One end of the quintuple assembly is connected to 4 different tubes (up to 4 filaments), while the other end is connected to the top of the extruder for feeding. Function of (4-in-1 PTFE connector) (applicable to X1/P1/A1 series + ) 1. Main function: This connector is a key component for multi-material printing (MMU, Multi-Material Unit), used to connect (Automatic Material Switching System) and the printer hot end to achieve automatic switching of 4 different colors/materials. 2. Specific function: Merge 4 PTFE tubes (from ) into 1, so that 4 materials can enter the hot end through the same path. 3. Applicable models: X1/X1C ( required); P1P/P1S ( required); A1/A1 mini ( Lite required) 4. Common problems: Material switching failed? Check if the connector is loose and the PTFE tube is worn. Is the material stuck or blocked? Make sure the connector is aligned with the and hot end to avoid bending. 5. Other machines: Not tested, please confirm that the machine supports multi-color material change function. Specifications: Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Color: As Shown Material: Metal + PLA Package Contents: 1 x Feed Pipe Connector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.