JBF National neodymium cup magnets are made using strong rare earth neodymium magnets, and are housed in a nickel finished steel cup. This cup serves a dual purpose of both protecting the magnet from damage while maximizing the magnet’s overall grip strength. Also, the countersunk holes these magnets feature make affixing them in place as needed, no issue at all.
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Item #

Outer Diameter

Height

Countersunk Hole Diameter

Pull Strength

Grade

N/A 0.74 in N/A 0.28 in N/A 0.33 x 0.18 in N/A 26 lb N/A N42
N/A 0.79 in N/A 0.28 in N/A 0.33 x 0.19 in N/A 28 lb N/A N42
N/A 1 in N/A 0.35 in N/A 0.47 x 0.21 in N/A 65 lb N/A N42
N/A 1.25 in N/A 0.3 in N/A 0.41 x 0.22 in N/A 80 lb N/A N42
N/A 1.5 in N/A 0.35 in N/A 0.47 x 0.26 in N/A 120 lb N/A N42
N/A 1.8 in N/A 0.4 in N/A 0.59 x 0.3 in N/A 160 lb N/A N42
N/A 2.2 in N/A 0.6 in N/A 0.78 x 0.3 in N/A 240 lb N/A N42
N/A 3 in N/A 0.76 in N/A 1 x 0.4 in N/A 410 lb N/A N42
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