1. Main function: This connector is a key component of multi-material printing (MMU, Multi-Material Unit), used to connect AMS (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 AMS) into 1, so that 4 materials can enter the hot end through the same path. 3. Applicable models: For X1/X1C (AMS required); For P1P/P1S (AMS required); For A1/A1 mini (AMS Lite required). 4. Common problems: Material switching failure? → Check if the joint is loose and if the PTFE tube is worn.Material stuck or blocked? → Make sure the joint is aligned with the AMS and hot end to avoid bending. 5. Other machines: Not tested, please confirm that the machine supports multi-color material switching function Notes on use [Important]: When using, insert the Teflon tube, and rotate it to ensure that the tube is inserted in place, so that the material can be fed smoothly. The hygrometer is a mechanical model, does not contain button batteries, and is a common product. The four-way assembly is used to switch consumables during multi-color or multi-consumable printing. One end of the four-way assembly is connected to 4 different Teflon tubes (up to 4 consumables), and the other end is connected to the top of the extruder for feeding. The role of (4-in-1 PTFE connector) (for X1/P1/A1 series + AMS) Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Color: White Material: PLA Package Contents: 1 x Four-Way Module 1 x 4M White Feed Tube 1 x Black Tube Cutter