1 Beam Level-3 Vial with Angle Finder,aluminum level,measuring tool 1 Beam Level-3 Vial with Angle Finder,aluminum level,measuring toolManufactured from hardeded aluminum with fine finish and prSize:300mm/12", 400mm/16", 500mm/20", 600mm/24", 800mm/32", 1000mm/40", 1200mm/48", 1500mm/60"