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 durable, not easy to break 3 Adjustable ranging for different construction situations 4 carbon steel hammer with stable performance 5 Strong magnet on the side for easy attachment to iron objects 6 Suitable for building line wall vertical measurement Specification: Condition: Br New Item Type: Wire Plumb Bob Applicable length: 3 meters / 9 8ft, 6 meters / 19 7ft (optional) Usage: Suitable for building line wall vertical measurement Package List: 1 Line hammer Note: 1 Please allow slight error due to manual measurement Thanks for your understing 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 stard