3 Element Glass Collimating AR Lens 405nm - 445nm - 450nm Laser Diode M9/P0.5

This listing is for one 3 element collimating lens w/ AR coating for 405nm - 465nm. It has M9/P0.5 threads that will work with a lot of the standard diode housings available. This lens is good for correcting laser beams that will be shooting at a far distance.