IRWIN Level, Extendable, 4-10 ft, 8 Inch (1801106)

3 heavy-duty, reinforced aluminum I-Beam rails that are nearly three times the length when collapsed Rails securely lock in infinite settings to meet any extended leveling requirements. Large, easy-to-read vials and a large handle make it easy to grip and hold with or without gloves. Lifetime guarantee of accuracy to.058° Product Dimensions (cm): 3.50 x 20.32 x 121.92   It is built with three heavy-duty, reinforced aluminum I-Beam rails that extend nearly three times their collapsed length. Rails securely lock in infinite settings to meet any extended leveling requirements. Large, easy-to-read vials and a large handle for easy gripping and holding with or without gloves are included. To.058-degree accuracy is guaranteed for life. IRWIN Tools 4-Foot to 10-Foot Extendable Level, 8-Inch (1801106)