The Multi-Purpose Laser Leveler laser guided level projects a 50 foot line, has built in horizontal and vertical level bubbles, adheres to any surface and leaves no marks behind. Level requires 2 'AAA' batteries (not included). Comes with adhesive strip and two pins located in the battery compartment for convenient wall mount. Measures 4 13/16" x 1 5/8" x 2 3/8". Includes: Laser Level w/ Instructions Reusable adhesive strips 50 Ft. Laser Projection On/Off Power Switch Leaves no Marks behind! Makes finding studs in the wall easy.