Features: The WESTWARD® magnetic I-beam level features a strong holding magnetic edge that allows hands-free use on ferrous metal surfaces. Rubberized, antishock, anti slip end caps protect frame. Frame Material / Aluminum Length / 48 in Magnetic/Nonmagnetic / Magnetic Top Read / No Total Number of Vials / 3 Number of Plumb Vials / 2 Number of Level Vials / 1 Number of 30 Degree Vials / 0 Number of 45 Degree Vials / 0 Lighted Vials / No Number of V-Grooves / 0 Accuracy / 0.001 Vial Type / Barrel Vial Material / Acrylic Number of Magnets / 1 Magnet Type / Strip Color / Blue