BLACK+DECKER BullsEye Auto-Leveling Laser with AnglePro (BDL170) - VERSATILE USE This class II laser level is ideal for hanging picture frames, installing decorative items, mounting shelves, straightening, and angled applications like hanging items along a staircase. - BULLSEYE AUTOLEVELING TECHNOLOGY Projects a horizontal or vertical laser level line automatically without needing adjustments for expert precision. - ANGLEPRO TECHNOLOGY Provides an automatic reference for angled lines. - RUBBER OVERMOLDS For added protection against drops. - BACKLIGHT Improves visibility of angle reference points. - WALL MOUNT AND ATTACHMENTS For hands-free convenience. - INCLUDES (1) laser level, (2) AAA batteries, (1) wall mount.