JBF National ceramic cup magnets are made using strong ceramic C8 grade 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.
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Item #

Height

Inner Hole Diameter

Outer Diameter

Pull Strength

Grade

N/A 0.37 in N/A 0.23 in N/A 2.6 in N/A 50 lb N/A C8
N/A 0.50 in N/A 0.5 in N/A 5 in N/A 200 lb N/A C8
N/A 0.3 in N/A 0.26 in N/A 2 in N/A 40 lb N/A C8
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