The SMCN0296 cylinder neodymium magnet is made from high-performance N42 NdFeB, with Nickel coating. The dimension of this item is 3/16″ dia. × 2″ thick, magnetized through thickness. The weight of this super strong neodymium magnet is 0.0149375 lbs. It can pull up to 2.29 lbs steel. And the surface field is up to 6593 gausses.