1. Carbon steel Pob: Pob steel is made of carbon steel and designed to hang on the solder, providing sufficient weight for a stable vertical line and accurate measurement. The forged multi-function wire pendant is metal, sturdy and durable. 2. Strong magnetic design: A strong magnet on the side allows easy attachment to iron structures, making setup quick and convenient. It helps maintain balance, lifts the solder, and the thread automatically retracts. 3. Premium nylon thread: The high-quality nylon thread is clear, wear-resistant and not prone to breaking after prolonged use. Solder with automatic winding; just lift the hammer slightly and the flexible coil inside winds automatically, saving effort. 4. Adjustable resistance: Resistance is adjustable, so the portable plumb setter can accommodate different weights of pendulum hammers. It also offers adjustable distance measurement, suitable for various building conditions. Applications and use scenarios: - Use for hanging vertical references when installing tiles, cabinets, or curtain rods to ensure true plumb alignment. - Mount fixtures on iron structures or metal studs, where a quick, stable plumb line is needed. - General carpentry or masonry tasks requiring precise vertical alignment for shelves, partitions, brackets, or wall fixtures, with adjustable hammer weight and distance measurements.