Length: 48"Level Dimensions: 1" X 2-1/4"Material: Aluminum BodyVials: 1 Level, 2 PlumbVial Material: ABS PlasticHeavy-Duty Frame Assures Durability And AccuracyTop Read Window Maximizes ReadabilityDurable Easy Read Acrylic Vials Are Impact Resistant And Stronger Than GlassQuick Change Replaceable Cover Plates And Vials For In The Field ServiceShock Absorbing End Caps Protects Frame