Bmcu370C Hall buffer version supports bidirectional buffering, providing a softer feeding experience that minimizes filamenthub damage. Supports "long retraction when cut in filament" functionality for improved filament management. BMcU is an open source project, enabling low-cost realization of -lite functionality. Compatible with A1, A1 mini printers, and P1 series (experimental support). Operates in 4-channel mode only, with no current support for expansion beyond 4 channels. This kit is designed for users with some hands-on skills, such as soldering, as assembly and debugging may be required. It is currently in testing, and updates to the Bill of Materials () may occur. Please note that this kit consists of loose components and does not include printed parts. Variations in appearance, color, and printed text may exist due to different production batches, but these not affect functionality. Color: As Shown Material: Plastic+Metal Package Contents: 1*Bmcu Lite kit 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.