DeWalt 33 ft. Tile Laser Square This 33 ft. laser square is great for tiling with its 3 integrated mounting pins. This durable laser offers an IP54 debris/water resistant rating and has an aluminum base. Its two red beams achieve a 90 degree angle, great for a wide range of uses. Features Includes three (3) integrated mounting pins to affix laser to wall surfaces Offers accuracy of +/- 3/16 in. at 33 ft 3 Bubble vials for precise positioning IP54 debris/water resistance and aluminum base for durability Laser comes in a tool pouch for safe storage What's Included? (3) Pins (3) AA Batteries Tool Pouch Laser Wavelength ≤1.0 mW CLASS 2 LASER PRODUCT Laser Power ≤1.50 mW (each beam) CLASS 2 LASER PRODUCT Working Range 33’ (10m) Accuracy ±0.16” @ 33’ (±4 mm @ 10 m) Level Vials 0°, 45°, and 90° to set plumb or level lines Power Source 3 AA (1.5V) size batteries (6V DC) Run Time 20 hrs