Stanford - Model SMSN0737 - Neodymium Sphere Magnet
The SMSN0742 SPHERE neodymium magnet is made from high perfermance N42 NdFeB, with Nickel coating. The dimension of this item is 5/16' diameter, magnetized , with tolerance of ±0.004'. The weight of this super strong neodymium magnet is 0.0043125 lbs. It can pull up to 2.52 lbs steel. And the surface field is up to 8815 gauss.