PLUMB BOB: This plumb bob is utilized by foundation contractors, excavation contractors, and surveyors to align, transfer points, or establish a straight vertical or plumb line by connecting it with a string. PRACTICAL DESIGN: The plump bob tool is designed practically with a hardened steel tip for accurate measurements. It enhances work quality, efficiency, and safety. QUALITY MATERIAL: The steel tip plumb bob features a brass-plated body for added durability and performance. It is also coated with a lacquer finish for protection against corrosion and increased lifespan. EASY INSTALLATION: The brass plumb bob tool is equipped with a removable and replaceable hardened steel tip and cap for quick string or line installation. PRODUCT SPECIFICATION: The Johnson steel plumb bob weighs 12 oz. and is ideal for various indoor and outdoor applications, including carpentry, masonry, surveying, and fencing.