Check the listing for details. PREXISO 50FT Laser Level Level Line leveler Tools Self-Leveling Cross Line Laser. Condition: New. Listed at 40.99 USD. Highly Versatile: Projects bright horizontal & vertical red-beam lines onto flat surfaces and levels in few seconds with high accuracy ; Class II laser product, output < 1mWSelf Leveling & LED Indicator: With the switch to the "unlocked" side, the tool is in self-leveling mode, means the tool will level itself if it is within ±4° of horizontal and the LED indicator keeps in Green. If the surface exceeds ±4° from horizontal, the laser line will gone and the LED indicator goes red . In this case, adjust the angle of the surface slightly for levelingApplication: Slide the switch to "lock" side and press the button 3sec to turn on the laser in manual mode, lock lines for alignment to other angles, help you with paving tiles, installing photo or furniture carpentry, hanging wallpaper etcUniversal Usage: with the 1/4"-20 nut at the bottom of the tool and clamp to door frame or work bench. You can mount the tool to accessories like wall mount or tripod (not included). The tool can work under various applications which makes jobs done easierPortable & Durable: Laser leveler tool with a portable size, you can easily put it in your pocket or tools bags. Covered by TPE soft rubber for shock resistant and comfortable grip. Comes with 2 AA batteriesManufacturer‎Hang Zhou Great Star Industrial Co.,LTDItem Weight‎13.1 ouncesPackage Dimensions‎6.54 x 4.61 x 2.83 inchesCountry of Origin‎ChinaItem model number‎PLC10 Cross Line LaserSize‎360°Clamp& LED IndicatorStyle‎LaserMaterial‎Thermoplastic Elastomers, RubberPower Source‎Battery PoweredIncluded Components‎2 x AA Batterie, 1 x Laser Level