1、Two Tree air assist is widely compatible with Various laser engraver on the market including TWOTREES TS2/Totem S/TTS-55, Atomstack A5 Pro, Sculpfun S9/S6 Pro, Ortur Laser Master 2 Pro/S2/SF, FoxAlien Reizer 20W, KENTOKTOOL LE400PRO, Pergear LaserStorm L5, JICCODA LE-1. 2、Air assist can quickly reduce the surface temperature of objects during engraving and cutting,  preventing distortion and discoloration due to high temperatures, ensuring smooth lines, complete patterns, and clean material surfaces. 3、With large 10-30L/min adjustable airflow range, and easy to control with switch button. 4、Only produce less than 60dB noise during operation, air assist set has the advantages of low noise and vibration, giving you a quiet laser engraving and cutting environment. 5、Easy to install and use, no need to buy additional accessories, just two steps to install and use. Specification: Size: 175x66x80mm Weight: 1.27kg Color: Black Material: Aluminum Alloy Air Output: 10-30L/min Air Speed: 3.3-3.5m/s Power: 12V 36W Plug: US Compatible Focal Length: 20-30mm Compatible Machines: for Totems/TTS/TS2, for A5 pro, for S9, for S6 Pro, for S2-SF, for S2-SF, for Reizer 20W, for LE40OPRO, for L5, for LE-1 Package Size: 295x160x110mm/11.6x6.2x4.3in Package Weight: 1280g/2.8lb 1 x PU Tube 1 x Air Pump 1 x Reducer Pneumatic Fittings and Silicone Tubing 1 x Control Valve 1 x Black Acrylic 1 x Blow Block 1 x Power Adapter