DEWALT Laser Level DW0851 100 Foot 5 Spot Beam Line (One Eighth Inch Accuracy Five Points Horizontal Reference Plumb Point Metal Wall Track Layout) Grease Guns PRO TIP: Always actuate your detector PRO TIP: Always actuate your detector unit inside a known fresh air zone completely clear of the test site prior to walking up to a suspected line leak this stabilizes the automated cell management matrix and prevents thermal protection charger delays Key Performance & Safety Features 125 in @ 100 ft Laser Wave Color Spectrum: High Visibility Red Beam Configuration Array: 5 Independent Spots + 1 Horizontal Line Operating Power Source: Disposable AA Alkaline Batteries Mounting Interface Thread: 1 4 in Hex Threaded Insert Leveling Internal Core Style: Self Leveling Pendulum with Transit Lock Assembled Housing Length: 10