Bosch Green-Beam Three-Point Self-Leveling Alignment Laser. Self-leveling laser with +-1/8 in. accuracy at 30 ft. for up/down plumb, align and level applications. This unit features green-beam technology, which is up to 4X brighter, The integrated reference lines offer precise positioning of tool and transfer of points. The multipurpose attachment positions the mount with magnets or a 1/4 in.-20 threaded mount. The Bosch Smart Pendulum System self-levels, and it indicates out-of-level condition. In addition, the pendulum automatically locks when the unit is turned off for protection during transport. The compact design allows the unit to go anywhere and can be used in almost any interior application. It has 360 degree rotation for extra protection, a hard carrying case and full rubber overmold housing.