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 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 (Used without ) Compatible Models:X1 Carbon, X1, X1E, P1P, P1S, H2D A1, A1 mini (Replace the five-way connector with a single connector) For (Used without ) Compatible Models: K1, K1C, K1 SE, K1 MAX, K2, K2 PLUS, , Hi, for V3, for V3 PLUS, for -5 MAX, for -5 S1, for Sermoon D3 Pro, for Sermoon D3 Incompatible Models: for V3 KE, for V3 SE, for S1 Pro, for S1 Plus, for S1, for , for -5 PLUS, for V2, for Neo, for Max Neo, for Max, for -2, -10 SE, -, -6 SE, -20 Pro, -10S Pro V2, -10 Smart Pro, -10 Smart, -10, for Sermoon V1 Pro For (Used without Pro) Compatible Models: for S1 K3M, K3C (The auto filament refill function may fail due to the five-way extruder structure of the K3M/K3C) For Compatible Models:M5 For Prusa Compatible Models:XL, MK3S Color:As Shown Material:plastic Package Contents: 1 * 3D Printer Filament Buffer 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.