Stanley fatmax pro box beam spirit levels 3 vial stanley 0 43 625 fatmax xtreme magnetic levels are precise and tough and equipped with limpet like holding powersuper accuratesolid block acrylic vials provide the best in class accuracy of 05mmm in eight orientations plus every fatmax xl level comes with a lifetime accuracy warrantysuper strong magnetsrare earth magnets give it twice the magnetic pull of conventional magnetic levels5 x stronger than other stanley levels thanks to its