The Spec Ops Magnetic Box Beam Level with Bungee features a Patented Tourniquet Bungee System that securely mounts the level to plastic pipes, 2x4s and other surfaces, while the rare earth magnets on the bottom securely grip to magnetic surfaces. Manufactured with box beam style aluminum construction and then precision milled for elite durability, this level also features three 33% higher visibility epoxy-locked acrylic block vials that deliver an accuracy of 0.0005"/inch and offer guaranteed lifetime accuracy. The 2% slope lines were also added to help you do more with less. The ergonomic handle is perfect for comfortable all-day use, while the tool-free removable shock-absorbing end caps will protect against shock and drops. And with a guarantee to deliver a lifetime of mission capability on the world's toughest job sites, this level has been drop tested to exceed MIL-STD-810G. We support our nation's heroes by donating 3% of proceeds to veteran and first responder causes.The Spec Ops Magnetic Box Beam Level with Bungee features a Patented Tourniquet Bungee System that securely mounts the level to plastic pipes, 2x4s and other surfaces, while the rare earth magnets on the bottom securely grip to magnetic surfaces. Manufactured with box beam style aluminum construction and then precision milled for elite durability, this level also features three 33% higher visibility epoxy-locked acrylic block vials that deliver an accuracy of 0.0005"/inch and offer guaranteed lifetime accuracy.