This 10" True Blue Heavy Duty Magnetic Torpedo Level (EM8110-2) is durable designed with a heavy duty aluminum frame, making it the perfect accessory on the job site. It's accurate to within 0.0005" per inch in all 10 level and plumb working positions. It also boasts powerful rare earth magnets that offer up to 10 lbs. of holding power on steel studs and other surfaces. Plus, the V-grooved working edge fits on pipe or conduit.