CRAFTSMAN Red 20-ft Self-Leveling Indoor Line Generator Laser Level with Line Beam Model #CMHT77636 We're on the level with our laser levels for construction. CRAFTSMAN leveling, measuring, and stud finding tools are accurate, compact, and easy to use. Laser levels are available in red or highly visible green laser beam options. Cross lines are perfect for installation of partitions, shelves, cabinets, tile, and flooring. Our laser level with integrated stud sensor combines two tools in one, its detects both wood and metal studs as well as Live AC. In addition, it also projects a horizontal laser line. Other models can accurately identify stud edges or center points as well as energized wires. This laser distance measurer works off AA batteries and provides accuracy measurements at the click of a button. Two out of the three will also allow for easy area and volume calculation capabilities. Features: VERSATILITY: 2-in-1 laser level and stud sensor VISIBILITY: 20-Ft Visible Range ACCURACY: 1/8-in accurate laser EASE OF USE: Automatic reference for angled lines SELF-LEVELING: Levels automatically EASE OF USE: Center marking channel for marking stud location STUD LOCATION FINDER: Center marking channel for marking stud location CONVENIENCE: Automatic reference for angled lines Includes (1) CMHT77636 Self Leveling Laser; (1) Wall Mount Bracket; (2) AA Batteries