Quality material This vertical horizontal bubble level rod is made of plastic for durability and lightweight handling, providing sturdy performance in field use. Compatibility and size Length: 85 mm (3.35 inches). Tie belt length: 30 cm (11.81 inches). This leveler tool fits round and rectangular grade rods with a diameter of 1 to 1.25 inches. Builtin bubble for accuracy The universal horizontal bubble is clearly visible, with a bubble display that supports precise level readings. Versatility and applications Suitable for rightangle leveling on round and rectangular grade rods, as well as aluminum alloy center rods, carbon fiber rods, and tower rods. Use scenarios Surveying and staking: attach to grade rods to verify horizontal or vertical alignment at sites requiring precise measurements. Construction and formwork: use on varied rods to check level during frame or form installation, ensuring plumb and true lines. Tower and equipment installation: align center or support rods on towers or masts to achieve accurate rightangle positioning.