When users are not finding a quite efficient dot alignment at quite long work distance, it is not helpful at all to only adopt a quite simple red laser pointer. In order to get highly clear dot alignment efficiently, it is just a major trend for users to try 650nm 100mW red laser diode module. It is generating moderate brightness red laser light from 650nm red laser diode. However, owing to its advanced use of thermal emitting system and qualified optic lens, this durable structure made red dot laser is applying for various working surface, achieving superior nice thermal emitting and increasing stability in constant dot alignment use. After quite advanced use of import 650nm red laser diode and equipment with a metal heat sink cooling system inside 26mm diameter tube, 650nm 100mW red laser diode module gets superior nice thermal emitting and increasing stability red dot projection in constant use. When it gets quite long developing history and quite mature laser diode tech, after production into a real dot laser alignment, it is just keeping highly stable red dot projection and quite low production cost for any industrial precise device manufacturing works. Technical data: Item: 650nm 100mW red laser diode module Laser class: IIIb Optic lens: glass coated lens Adjustable focus: yes Power source: 9V 1000mA DC input power supply Applications: laser marking machine, laser engraving machine, military dot positioning, drilling system etc http://www.berlinlasers.com/650nm-red-laser-diode-module