The buffer is installed in the printer cover and consists of a slider, a spring, and a buffer plate. It is used to adjust the feeding action and ensure a smooth and appropriate supply of wire to the hot end. Compatibility: For Bambu Lab H2S Safety Warning IMPORTANT! It's crucial to power off the printer before conducting any maintenance work, including work on the printer's electronics and tool head wires. Performing tasks with the printer on can result in a short circuit, leading to electronic damage and safety hazards. During maintenance or troubleshooting, you may need to disassemble parts, including the hotend. This exposes wires and electrical components that could short circuit if they contact each other, other metal, or electronic components while the printer is still on. This can result in damage to the printer's electronics and additional issues. Therefore, it's crucial to turn off the printer and disconnect it from the power source before conducting any maintenance. This prevents short circuits or damage to the printer's electronics, ensuring safe and effective maintenance. Color: Black Material: Plastic+Metal Package Contents: 1 * Filament Buffer