1.Designed to temporarily magnetize the end of screwdriver, nut driver, or similar tool to hold screw or other fastener;
2.Magnet assembly made of magnets enclosed in hard plastic;
3.Approximate outer dimensions are 2" length, 1.9375" width and 1.125" height
Duration of magnetism is determined by composition of tool steel;
4.Magnetizer demagnetizer is not designed to hold itself to steel tool box or similar surface.