Empire EM81.10-2 True Blue Heavy Duty Magnetic Torpedo Level, 10" True blue vials are banded to highlight the edge of the bubbles for easy readings Powerful rare earth magnets offer up to 10 lb. of holding power on steel studs and other surfaces V-grooved working edge helps keep the level in place on pipe or conduit Heavy-duty aluminum frame for durability Integrated endplates help protect the level from damage