Milwaukee REDSTICK box levels provide best-in-class vial readability, frame durability, and magnet strength. The ALL-METAL BACKBONE provides strong, durable frame to ensure long-life accuracy. SHARPSITE Vial Technology provides superior readability with a magnified bubble and high-visibility vial spirit. Amplified Rare Earth Magnets maximize holding power. No. MLBXM24: Length: 24 In., Material: Aluminum, Magnetic: Yes, Number Of Vials: 3, Pkg Qty: 1 No. MLBXM48: Length: 48 In., Material: Aluminum, Magnetic: Yes, Number Of Vials: 3, Pkg Qty: 1