Features: 1. High compatibility: Twotrees air assist is widely compatible with various laser engraving machines on the market, including TWOTREES TS2/TT-5.5S/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. Rapid cooling: During the engraving and cutting process, air assistcan quickly reduce the surface temperature of the object, prevent deformation and discoloration caused by excessive temperature, and ensure smooth lines, complete patterns, and clean material surfaces. 3. Adjustable air flow: Large air volume adjustable range of 10-30L/min, which can be easily controlled through the switch button. 4. Easy to install and use: No need to purchase additional accessories, it only takes two steps to install and use. Specifications: Voltage: AC110V/220V ±10% Frequency: 60Hz Current: 1067mA±15% Power: 15W±15% Maximum flow: 28L/min Pressure: 30kPa Noise: 55dB Compatible models: Two Trees Totems/TTS/TS2; A5 pro.S9.S6 Pro; Master2 ProS2-SF; XTOOLD1/D1PRO Master2 S2-SF; Reizer20W.LE40OPRO.L5.LE-1 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. Thank you! Please allow 1-3cm measuring deviation due to manual measurement. Packing List: Air pump*1 Long catheter*1 Short catheter*1 Laser head air guide kit*1 Lens hood*1 Air tube connector*2 Hexagonal wrench*3 Screw*8