Features: 1. Can be fixed on wood, masonry wall surface, safety lock can prevent accidental injury. 2. High-quality nylon thread is easy to identify, wear-resistant and durable, not easy to break. 3. Adjustable ranging for different construction situations. 4. High quality carbon steel hammer with stable performance. 5. Strong magnet on the side for easy attachment to iron objects. 6. Suitable for building line and wall vertical measurement. Specification: Condition: 100% Brand New Item Type: Wire Plumb Bob Applicable length: 3 meters / 9.8ft, 6 meters / 19.7ft (optional) Usage: Suitable for building line and wall vertical measurement Package List: 1 * Line hammer Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.