Specifications: 450nm 20W (Optical power 4W+) Effect Laser Power: 20W Material: Aluminum Alloy+Plastic Light Color: Blue-violet Wave Length: 450nm Facula Form: Punctiform, Adjustable Focus Input Voltage: 12V 2A Interface Parameter: Support TTL signal controls power Item Size: 9.5*3.5*3.5cm Package Size: 14*6.2*6.2cm Item Weight: 146g Package list: 1pcs laser module 1pcs 3pin input cable LT-80W-AA-Pro - 12V (Optical power 10W) It has an upgraded nozzle compared to the previous LT-80W-AA. The difference of this nozzle is that it has an advanced hydrodynamic design that makes better use of air pressure. When using the same air compressor, the upgraded version has a faster jet airflow. With the air asssit nozzle The laser head comes with a specially designed air assist nozzle. When cutting with this laser head, the air assit system will blow air through the air nozzle. That will bring you excellent cutting experience and greatly reduce burned marks. Air pump suggestion: Air pressure and capacity: ≥0.027kPa, 27L/min Remarkable cutting ability Cutting 8mm bass plywood ,120mm/min ,one pass. Cutting 5mm bass plywood, 50mm/min, one pass. Cutting 5mm MDF by 2 passes, 150mm/min , 2 passes. With the laser protective cover Comes with a removable protective cover. Whether engraving or cutting, use this shield to filter blue light and work without laser glasses, convenient and fast. It's also easy to remove if you don't need it. Widely Compatible Design LT-80W-AA-Pro laser module can be installed on Z*aitu,O*tur,Tw* Trees,S*ulpful9, Xtool, A*omstack and other models of DIY laser engraving machines. (If you are not sure if it is compatible, please send us a picture of your machine’s contro board, we will provide you with a connection diagram.) With Air Assist VS No Air Assist Using air assist helps to cool the material and prevent heat damage, and also helps to remove any debris and fumes generated during the laser cutting process, resulting in a clean cut surface Interface diameter size Air nozzle outer diameter: 6mm; inner diameter: 3.5mm Air tube outer diameter: 8 mm;inner diameter: 6 mm Air pump suggestion: Air pressure and capacity: ≥0.027kPa, 27L/min Widely Compatible Design LT-80W-AA-Pro laser module can be installed on Z*aitu,O*tur,Tw* Trees,S*ulpful9, Xtool, A*omstack and other models of DIY laser engraving machines. (If you are not sure if it is compatible, please send us a picture of your machine’s contro board, we will provide you with a connection diagram.)