Pull Force: 9.78 LBDimensions: 12mm diameter x 5mm thickness, hole 4mm, (0.472in x 0.197in x 0.157in) 15/32in x 3/16in hole 5/32inMaterial Features: Neodymium (chemical symbol Nd) is element 60 on the periodic table. It is a rare earth metal and forms one of the Lanthan..