The SOLA BIG RED Mason Set contains the BIG RED 24" and 48" Mason box beams, 10" aluminum torpedo and carrying case. The SOLA BIG RED mason box beam levels are designed especially for masons: extra strong aluminum profile (890 G/M strength) with reinforcing ribs and two strike zones to protect the spirit level from the hits of a mason's trowel. The SOLA level guards fit all BIG RED levels and have enough physical grip to hold the pad in place, and can be detached when not in use or for level cleaning. Shock-absorbing 2-piece end caps are equipped with an anti-slip surface, allowing for convenient positioning and a secure grip to the measuring surface. The break-resistant acrylic block FOCUS vial with 60% magnification also offers a luminous backing for low light conditions. The vial fluid is not affected by electricity and will not fade under sunlight. Highest measuring accuracy: measuring tolerance standard position: ≤0.3 mm/m (0.017°), inverted position ≤0.5 mm/m (0.029°). Made in Austria.