2 Pcs Portable Measuring Instrument, Special Horizontal Bubble for Tower Ruler, Adjustable Grade Rod Level. Durable Construction: Made from heavy-duty aluminum, this level tool is strong, sturdy, and built to last while providing precise accuracy Versatile Compatibility: Fits both round and rectangular grade rods sensitivity for accurate leveling Lightweight and Portable: this tool is easy to carry and use, making it convenient for any job Wide Range of Uses: Perfect for home improvement projects, including leveling, measuring wall locations, and spacing hangers Color: Orange Material: Aluminum Alloy Package Contents: 2* levels Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.