The Bosch GLL100-40G Green Beam Self-Leveling 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 up to 100 Ft. The laser produces vertical, horizontal and cross-line modes, and the tool can project two lines independently or together, for a broad array of alignment and leveling applications. It includes Bosch-exclusive VisiMax technology, which monitors tool temperature and power consumption to deliver the brightest line for the job. The tool has full rubber overmold housing, designed to be similar to a roll cage, so every major impact point is reinforced with rubber. It is an IP64 rating, and features deeply recessed windows help protect the laser glass. The onboard user interface allows easy selection among the layout modes. 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.