This automatic anti-tangle filament cutter sensor is a functional fc diverter filament cutter automatic and essential AMS cutter accessory for 1.75 mm 3D printer filament, which efficiently fixes common printing issues including filament tangle and idle extrusion to lower print failure rates and reduce filament waste. This all-in-one 5-piece complete kit covers all you need for direct use and replacement: 1 x core automatic anti-tangle filament cutter main body 4 x durable spare cutter blades for long-term service 1 x wear-resistant ceramic eyelet for low-friction filament feeding 1 x low-friction guide ball for smoother filament transmission 1 x non-slip rubber ring for stable and secure installation Supporting tool-free installation and perfect compatibility with AMS multi-spool feeding systems, this fc anti-tangle filament cutter features an intelligent auto-cut and quick reset mechanism. It delivers steady, smooth feeding for mainstream 1.75 mm filaments like PLA, PETG, ABS, and ASA, bringing more reliable and efficient daily 3D printing experiences.