Super accurateSolid-block acrylic vials provide the best-in-class accuracy of 0.5mm/m in eight orientations. Plus every FatMax XL level comes with a lifetime accuracy warranty5 x stronger than other Stanley levelsThanks to its unique reinforced box-beam construction Light, tough and easy to handleLightweight aluminium body and sturdy bi-material handgrips make handling easyPrecision engineeredDual-machined levelling surfaces for maximum accuracyMagnified centre vialCentre vial is 20% larger than standard, making it clearer to readShock absorbing end capsProtect the level even if dropped 10 year Warranty.