The Milwaukee REDSTICK™ box levels provide industry-leading performance with best-in-class vial readability, frame durability, and magnet strength. The ALL-METAL BACKBONE™ provides the strongest, most durable frame ensuring long-life accuracy. SHARPSITE™ Vial technology provides best-in-class readability with a magnified bubble and high-visibility vial spirit. Amplified rare earth magnets maximize holding power. The Milwaukee REDSTICK™ box levels are backed by a lifetime accuracy guarantee and a Limited Lifetime Warranty. Features: ALL-METAL BACKBONE™ - strongest, most durable frame. reinforced vial retention; SHARPSITE™ VIAL technology - best readability, impact protected; Guaranteed lifetime accuracy - accurate to .029° (.0005 In./In., 0, 5 mm/m); Amplified rare earth magnets - maximum holding power; High contrast vial system is easy to clean and optimizes visibility; High density, removable end-caps protect frame and provide access in tight spaces; Wide, durable handles for comfort and portability; Precision milled measuring surface guarantees accuracy in all working positions; Overmolded, non-slip grips stick to the wall and prevent sliding; Durable, all-metal hang hole for storage