Machinists Levels Tube, Overall Length 6 in, Accessory Type Machinists Levels Tube/Plug Assembly, Overall Height 1 in, Overall Width 2 in, Compatible with Grainger Part Number 26Z912, 2ZVL3, Compatible with Level Type Machinist's Levels, Material Brass, Color Gray, Compatible with Manufacturer Model Number 98-6, Includes Cross Test Vial, Number of Pieces 1, Thread Size Not Applicable, Voltage Not Applicable