After the use of 50mW 635nm red laser line generator and easy connects with an AC/DC adapter, it would be an easy and efficient job to make intense red laser beam emission, and highly clear red line alignment at long work distance. It gets basic use of metal heat sink cooling system and APC driving circuit board inside durable metal housing tube. This red laser module enables highly stable red line projection and good performance within constant use within 8 to 10 hours per day. Either it is adopting qualified glass coated lens or separate crystal lens, 50mW 635nm red laser line generator enables high linear quality and fine red line projection in use. It is a strict test passing laser device, not affecting by any moisture or dust at all. Only after correct selection of fan angle optic lens, after proper adjustment of laser beam focus and line projecting direction, red line laser achieves no mistake and no barrier line alignment in all occasions effectively. Technical data: Item: Berlinlasers 50mW 635nm red laser line generator Laser class: IIIb Fan angles: 10-110 degree glass coated lens or separate crystal lens Adjustable focus: yes Line lengths: 0.5 meter to 6 meters Applications: lumber machine, textile garment processing, laser cutting, sand milling, lab experiment etc http://www.berlinlasers.com/635nm-glass-lens-red-laser-line-generator