Pull Force: 11.94 LBDimensions: 12mm diameter x 6mm thickness, (0.472in x 0.236in) approx. 1/2in x 1/4inMaterial Features: Neodymium (chemical symbol Nd) is element 60 on the periodic table. It is a rare earth metal and forms one of the Lanthanides series. When added to Iron (Fe)..