... long life,low price DM650D5 red dot laser module Characteriscics:High-quality laser diode,optical glass lens, driver ... of laser modules ,like as dot ,line /cross line laser module,DPSS laser,uniformline laser,single longitudinal mode green laserbeam expander laser module ... kinds of laser module.Shape of light: dot, single line,cross line ,collimated expanded beamwidth and length of line or diameter ...