There is a strong magnet on the side of the product, which can be easily adsorbed on the iron structure and is convenient to use. ?Strong Magnet Attachment?: Equipped with a powerful magnet, this plumb bob setter easily adheres to any iron structure, enhancing usability and efficiency on construction sites. ?Adjustable Resistance?: Tailor the device's resistance to match the weight of various plumb bobs, ensuring accurate and flexible usage for different project needs. ?Versatile Mounting Options?: Plumb bob setter features side hanging holes for easy attachment to nails or hooks, making it ideal for precise measurements on concrete, masonry and other surfaces. ?Customizable Distance?: Plumb bob setter offers adjustable distance settings to accommodate varying construction environments, making it a go-to tool for diverse building tasks. ?Broad Applications?: Perfect for a range of projects including decorating, carpentry, wall construction, and general construction, this plumb bob setter is a valuable tool for both professionals and DIY enthusiasts.