Magnetic I-Beam Levels provide a best-in-class solution that is built to withstand job site conditions. The all-metal frame offers superior durability and protects accuracy while maintaining lightweight performance for easy transport on and off the site. magnetic I-beam levels feature impact-resistant vial covers protect vials from drop and impact damage, debris, and fogging for better visibility.The 24″, 48″, and 78 levels have an integrated pitch vial to easily set 1-degree and 2-degree pitch for runoff applications. A strong magnetic edge provides reliable hold to any ferrous surface for trusted hands-free use. MILWAUKEE I-Beam Levels are proudly made in the USA and offer a limited lifetime warranty.