Wizard Wrap, Extra Large, 7 in W, 180 in L, Heat Resistant ORS NASCO Rubber gasket on the inside Rubber gasket on the inside of the holder eliminates all concern of friction and noise Holder is hinged and swings back giving you access to the tank much quicker and easier than chains and makeshift methods which helps provide for peripheral vision Polycarbonate lenses provide 99 made from a non asbestos has a nice thick edge for easier more accurate marking and helps keep your soapstone from slipping 36" tape measure printed on the medium & large Wizard limits the need for an extra tape measure Circumference & Quartering scale printed on every wrap limits the need for calculation Packaged in a durable