Irwin's 1550 Series I-Beam Level combines heavy-duty aluminum construction with Rare Earth magnets for accurate hands-free leveling on metal surfaces. The Dual Chamber design resists twisting under load, and the Plumb Site(R) window provides clear, undistorted reads in the vertical position.

• Heavy-duty aluminum body with Dual Chamber design for strength and durability
• Resists twisting under load for consistent accuracy
• Plumb Site(R) dual-sided, undistorted viewing in plumb position
• MagnaVials(TM) with wide top read window
• Rare Earth magnets 5X stronger than strip magnets for hands-free use on steel and iron
• Size: 78"