The 48 Inch Aluminum I-Beam Level by Mayes is extruded aluminum alloy so its heavy duty without the heft. It features 3 impact resistant, high visibility vials (accurate to 0.001 inch) for easily finding level and plumb. A top view center vial provides an extra clear read. It features a large hang hole for easy storing when the work is done.

• Durable Extruded Aluminum Frame is Heavy Duty yet Super Lightweight
• 3 Impact Resistant, Hi-Vis Vials (Accurate to 0.001 Inch) with Top View Center Vial
• Field Replaceable Cover Plates and Vials
• Hang Hole for Easy Storage
• Made in the USA