GREEN BEAM: The bright green-beam laser lines allow easier work because they are up to 2x brighter than standard red beams CONVENIENT: This compact 40 ft. Cross-line laser design features green beams for visibility, self-leveling technology for accuracy and visible for brightness VISIBILITY: Cross-line functionality that includes the exclusive Bosch Visimax technology to provide maximum line laser brightness up to 40-ft in standard working conditions VERSATILE: The tool allows fast setup because it projects two bright lines that are precisely level and plumb for a wide array of leveling and alignment applications FLEXIBLE: Includes a 2mm mounting device, which clamps to multiple surfaces and provides a rotating 360° neck for quick setup and simple fine-tuning.