The SMRN071 countersunk neodymium magnet is made from high-performance N42 NdFeB, with Nickel Black Plastic coating. The dimension of this item is 1 1/4" od × 0.221" id × 0.402" id × 3/8" thick w/ hole to accept #10 screws, magnetized through thickness, with the tolerance of ±0.004" × ±0.004" × ±0.004" × ±0.004". The weight of this super strong neodymium magnet is 0.08625 lbs. It can pull up to 20.49 lbs steel.
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