Smooth Remote Feeding for 1.75mm Filament: Designed specifically for remote filament feeding, the 3D Printer Filament Buffer ensures stable, low-resistance filament delivery during printing - enhancing print accuracy and reducing strain on the extruder. Automatic Filament Buffering: The buffer automatically preloads a section of filament to the hot end. This reduces the pulling force required by the extruder, maintains consistent pushing pressure, and enhances overall print quality stability. Auto Filament Refill: When the primary filament runs out, the backup filament will automatically feed in based on the preset time - no manual intervention and no interruption to your print. Ideal for extended or unattended print jobs. Easy Setup & Broad Compatibility: Quick to install and simple to use - an ideal upgrade for both hobbyists and professional 3D printing users. For Bambu Lab (Used without AMS) Compatible Models:X1 Carbon, X1, X1E, P1P, P1S, H2D A1, A1 mini (Replace the five-way connector with a single connector) For Creality (Used without CFS) Compatible Models: K1, K1C, K1 SE, K1 MAX, K2, K2 PLUS, K2 PRO, Hi, for Ender-3 V3, for Ender-3 V3 PLUS, for Ender-5 MAX, for Ender-5 S1, for Sermoon D3 Pro, for Sermoon D3 Incompatible Models: for Ender-3 V3 KE, for Ender-3 V3 SE, for Ender-3 S1 Pro, for Ender-3 S1 Plus, for Ender-3 S1, for Ender-3, for Ender-5 PLUS, for Ender-3 V2, for Ender-3 Neo, for Ender-3 Max Neo, for Ender-3 Max, for Ender-2, CR-10 SE, CR-M4, CR-6 SE, CR-20 Pro, CR-10S Pro V2, CR-10 Smart Pro, CR-10 Smart, CR-10, for Sermoon V1 Pro For Anycubic (Used without ACE Pro) Compatible Models: for Kobra S1 K3M, K3C (The auto filament refill function may fail due to the five-way extruder structure of the K3M/K3C) For Anker Compatible Models:M5 For Prusa Compatible Models:XL, M