1It can be used to hang pictures, install shelving for a right angle 2Ideal for any job that requires a straight line or accurate measurement 3Dual diodes for making 90 degree laser beams on any surfaces 4Comes with hanging wall fixers, convenient for repairing at home 5Can projects 2 lines: vertical line, horizontal line, cross line with an accuracy of 0.01 Description: This item is a must for all DIY home enthusiast that want to execute the job with speed and precision. It reduces all problems associated with accurate lining or leveling. Easy to use, compact and lightweight, it can help you easily to finish home-renovation project, as installing floors, framing, laying out tile, and hanging pictures, etc. Features: It can be used to hang pictures, install shelving for a right angle. Ideal for any job that requires a straight line or accurate measurement. Dual diodes for making 90 degree laser beams on any surfaces. Convenient for repairing at home. Can projects 2 lines: vertical line, horizontal line, cross line with an accuracy of 0.01. Specificaton: Condition: 100% Brand New Model: Laser LV09 Material: ABS Color: Yellow, Red (Optional) Laser Wavelength: 650nm-680nm Accuracy: 0.01 Beam Angle: Right Angle Power Supply: 2 x 1.5V AAA batteries (Not Included) Product Size: Approx. 118 x 70mm / 4.65 x 2.76inch Package Weight: Approx. 104g Package Included: 1 x Infrared Laser Level Note: 1. Please allow 1-2 cm error due to manual measurement and make sure you do not mind before ordering. 2. Please understand that colors may exist chromatic aberration as the different placement of pictures.