IRWIN 1801105 Mason Level, Level/Plumb Vial, 6-Vial, Glass Vial, 48 in L

IRWIN 1500 W Mason's levels are made of laminated American hardwood and a heavy-duty reinforced aluminum frame for extreme durability and warp resistance. For plate and extended range leveling beyond 8 ft. IRWIN's extendable levels are constructed of three heavy-duty aluminum I-beam rails that extend up to almost 3X the collapsed length, locking securely in infinite settings to meet any extended leveling needs.