Brand Name: General Tools | Drive Type: Magnetizer/Demagnetizer | Length: 2 in. | Magnetic: Yes | Number in Package: 1 pc. | Packaging Type: Carded | Shank Diameter: - in. | Size: - The number 3601 precision magnetizer and demagnetizer can gauss and degauss screwdrivers, nut drivers, wrenches, taps and small tools. | Step design provides greater control of magnetic strength | Can convert any tool blade into a magnetic retriever of screws, nuts and metallic particles | Can also demagnetize tools for use in electronics | Demagnetize tools for use in electronics | 2 in. x 2 in. x 1-1/8 in. overall size