Johnson I-Beam Levels are lightweight and durable, "Built Jobsite Tough and accurate". The I-Beam series of levels feature field-serviceable level vials – if you ever break one, we'll send you a new one. Simply snap it into place, and you're ready to go. Other innovative features available on Johnson I-Beam levels include oversized, easy to read vials and large, padded hand grips (Johnson was the first level manufacturer to include handgrips on I-Beam levels). For drywallers, mechanical contractors and other tradesmen who work with ferrous metals, Johnson Magnetic I-Beam Levels feature rare earth magnets - 5 times stronger than vinyl magnets - to offer hands free operation. Another example of Johnson Level innovation is our Structocast I-Beam Level, which is precision molded, with incredible accuracy built in. It also floats in water, is impervious to temperature change, and has no burrs, so it won’t mar or scratch wood. Whatever your level needs are, Johnson has an I-Beam Level for you!