DEWALT DW088LG 12V Cross Line Laser, Green Self leveling cross lines that projects bright crossing horizontal and vertical lines Green beam laser technology which is four times brighter than red Integrated magnetic bracket allows for flush attachment to metal track and steel.Integrated magnetic bracket with 1/4 and 5/8 thread rear mounted magnets allow flush attachment to metal and steel track Over-molded housing and IP65 water/debris resistance,Part of the 12V lithium-ion rechargeable power tool battery platform If the battery is low, the laser will not operate properly (i.e. flickering light)