Check the listing for details. magnetic base holder. Condition: Used. Listed at 20.99 USD. The magnetic base holder is a metalworking tool used for securely holding metal pieces during inspection and measurement tasks. This handy tool is designed with a magnetic base, allowing it to easily attach to ferromagnetic surfaces. It provides stability and support for the metal pieces, ensuring they stay in place while being inspected or measured. Ideal for CNC machining, metalworking, and manufacturing processes, the magnetic base holder enhances efficiency and accuracy in various industrial applications.