Features: It can be installed on wood, iron, aluminum sashes, and concrete.It is equipped with a needle lock mechanism that prevents the needle from accidentally popping out.It uses a guide thread structure that allows you to easily change the thread without opening the main body.Uses fluorescent yellow thread for easy visibility.It uses a small but extremely powerful neodymium magnet with a magnetic flux density of 150mT.The case is made of ABS resin and elastomer resin and is molded as a single piece, making it non-slip.
Applications: Architectural plumb bob holder.
