Why xTool D1 Air Assist Set? Blow away the hot smoke when cutting materials, reduce the temperature, and achieve cleaner and smoother cuts. The xTool Air Assist device blows away the residues and smoke generated during the operation of the laser head, protecting the lens of the laser head from contamination and extending its lifespan. It uses air to quickly lower the temperature of the cut material's surface, preventing warping and discoloration due to high temperatures. It ensures smooth lines, complete patterns, and clean material surfaces. A strong and stable airflow with a constant output of 30 L/min effectively removes smoke and ensures the stability of the laser energy. The operating noise of the air assist unit is 40 decibels, making it quieter than the noise of the fan. The air assist unit provides a quiet laser engraving environment.