Not relying on any manual dot projecting tool, such as a simple red laser pointer, it would be much better solution to make use of Berlinlasers pro red dot laser alignment. It projects at least 3 times brighter red laser light than formal 650nm red laser. When it gets low laser beam divergence of less than 1mard and special TEM00 laser beam mode, after easy use of an external DC input power supply, this 625nm red laser module achieves intense red laser light emission and the most accurate red dot projection onto all surfaces effectively. This pro red dot laser alignment employs import 635nm red laser diode as beam emitting source. It gets advanced use of APC, ACC driving circuit board, not affecting by increasing temperature and serious electric current impact, which is able to work with highly stable red dot projection and long lifetime in continuous use. When this compact size 635nm red dot laser gets easy installation and adjustment to correct position, it achieves no mistake dot alignment in all occasions effectively. Technical data: Item: Berlinlasers pro red dot laser alignment Wavelength: 635nm Output power: 5mW-100mW Optic lens: glass coated lens Dot diameter: 0.3mm@10cm, 1mm-2mm@2 meters Applications: laser marking, laser engraving, drilling system and lab experiment etc http://www.berlinlasers.com/pro-red-dot-projecting-laser-alignment