1Free Leveling: The self leveling laser line can select lines, allowing you to quickly switch between vertical or horizontal lines, and even display two lines at the same time. In addition, the laser leveling system will automatically determine the correct level. 2With 12 Lines: The 3D laser cross line level allows you to project horizontal, vertical, diagonal, and cross lines on a flat surface, allowing you to easily view the reference points of the 12 line, ensuring smooth measurement. 3High Accuracy: The laser line level emits a bright and clear green laser beam that can be seen from 15m away, making it easy to obtain accurate results. Its high visibility and accuracy are clearly designed for home or office use. 4Reliable Work: The green line laser has a high level of anti debris and waterproof performance, and is equipped with a wrapped shaped casing, which can withstand the harsh conditions of the work site and is sturdy enough to cope with daily rough use. In addition to being made of good ABS material, line laser has scratch resistance and wear resistance. 5Self Leveling: A high performance laser line level and alignment tool specifically designed for professionals. Line level lasers provide a reliable automatic leveling system with clear, bright, and accurate laser horizontal lines. Green lasers are easy to view in bright environments.