Item Type: Adjustable Grade Rod Level Material: Aluminum 1[Grade Rod Level] Easily level with grade rod, this bubble level is suitable for round and rectangular rods with diameter of 1 to 1.25in. 2[Aluminum Construction] Made from aluminum, this grade rod level is highly sturdy and stable, can withstand heavy duty use. 3[40 Minute Sensitivity] The aluminum grade rod level has a top mounted adjustable vial, with a sensitivity of 40 minutes. 4[Light and Portable] This rod level is lightweight and portable, easy to carry and use, simply fix it on the rod for accurate leveling. 5[Wide Usage] Suitable for home decoration and related leveling work, can also be used for factory mechanical equipment leveling. 1 x Adjustable Grade Rod Level