Feature: 1. Laser Level Square is an easy to use leveling tool. 2. It is ideal for many purposes, including flooring, tile layout, paneling, wallpaper, formwork decoration, wainscoting, finishing carpentry, socket and switch layout, wall nail layout and partition installation. 3. With dual diodes for making 90-degree laser beams on any surfaces. 4. Two suction cups allow the laser level square to be mounted onto the surface’s alignment guide for 90-degree layout-calculate and turning angles in 5-degree increments. 5. Kindly Noted: the angle of the laser line can be changed according to the angle scale, saving your time of measurement and marking. Specification: .