Features: 1. Official SCULPFUN S9 Air Assist: This is a standard S9 air assist nozzle designed by SCULPFUN, it is an all-metal structure and fits perfectly with the S9 laser. Installation is very simple and you only need a few minutes to install. 2. High-speed air-assist nozzle: Like the S10 nozzle, it is a high-speed air-assist kit with advanced fluid mechanics design. Only a 30L/min air pump can achieve a high-speed airflow of 13.5m/s. 3. Faster and cleaner cutting: S9 air assist will improve the cutting ability of the S9 laser. Cut plywood and MDF boards 2-3 times faster, while cutting surfaces are cleaner without smoke. 4. Good air tightness: The S9 nozzle has a sealing ring, and the air of the air pump will not leak from the gap. In addition, the sealing keeps out dust, which will increase the lifespan of the S9 lens. 5. Complete accessories: The products include SCULPFUN S9 air-assisted nozzles, air pipes, sealing rings and other installation accessories you need. Except for the air pump, you don't need to buy any other accessories, you can directly use and upgrade the S9 machine. Specifications: Product model: SCULPFUN S9 Air Assist Kit Interface size: Air auxiliary copper pipe outer diameter: 8mm/0.31" Air pipe inner diameter: 7.5mm/0.29" Packing weight: 0.185kg Packing size: 19*15*8cm/7.48*5.9*3.15" Air pump selection suggestion: It is recommended to choose an air pump of ≥30L/min, and the air pump interface is preferably about 8mm/0.31". Notes: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Please allow 1-3cm measuring deviation due to manual measurement. Thank you for your understanding! Packing list: 1 x S9 Nozzle Kit 1 x Air pipe 1 x Tool Kit 1 x Manual