ADM 532nm Green Laser Pen

This Class III green laser has a maximum output of about 5mW and a wavelength of 532nm (plus or minus 10nm). This laser pen has been tested under extreme cold conditions and was found to operate below freezing temperatures with just a small decrease in energy output.

You can also buy this green pen laser in a finder kit, which includes a 25mm dual ring holder with adjustment screws and a universal mounting plate.