Bosch GLL5040G 360-Degree Cross-Line Laser Level Unit – Brand New in Box. The Bosch GLL50-40G Green-Beam Self-Leveling 360° Cross-Line Laser uses green-beam technology, which emits green lines up to 4X brighter than standard red beams. This gives the laser a working range of up to 100 Ft. The laser produces vertical line, 360° horizontal plane and cross-line modes, for a broad array of alignment and leveling applications. It provides 360° coverage to level with one setup point for an entire room. The tool has full rubber overmold housing, designed to be similar to a roll cage, so major impact points are reinforced with rubber. The one-button onboard user interface allows easy selection among the layout modes. The two-position recessed switch provides additional protection of the switch mechanism. The Bosch Smart Pendulum System self-levels and indicates out-of-level condition, and it locks the pendulum for secure transport. The included LB10 L-Bracket and DK10 ceiling clip offer quick setup and extra-strong magnets. Versatile layout – vertical line and 360 degree horizontal plane can be projected separately or together for a variety of applications. 360 degree coverage – level with one setup point for an entire room at a working range of 100 Ft in diameter. Bright green-beam laser – up to 4X brighter than standard red beams. Full rubber overmold housing – helps to protect major impact points, with a design similar to a roll cage. Smart Pendulum System – allows tool to self-level, and it indicates out-of-level condition. Secure laser transport – after switching off, pendulum is locked. One-button onboard user interface – easily select among the vertical line, 360 degree horizontal plane and cross line layout modes. Two-position recessed switch – provides additional protection of the switch mechanism.