The Spec Ops tourniquet level features a patented bungee system that securely mounts the level to dimensional lumber up to 2 x 8 in, plastic pipes and other surfaces. Precision-milled, high-strength aluminum, box beam construction for elite durability. Featuring 33% larger high-contrast green vials with 2% slope lines for maximum low light visibility and speed. Match-grade, epoxy locked 360 deg solid acrylic block vials deliver 0.0005 in/in for assured lifetime accuracy. The chamfered spine is built for strength and ease of use, while the tool-free, removable, shock-absorbing end caps will protect against drops and hard use. With a assured to deliver a lifetime of mission capability on the world's toughest jobsites, this level has been drop-tested to exceed MIL-STD-810G. All Spec Ops tools are backed by our five star, hassle-free lifetime warranty and with each purchase made, we support our nation's heroes by donating 3% of proceeds to veteran and first responder causes.