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* Nickel Bond * 1.00" hole * The diamond disk in 500 grit is a very fine diamond used mainly for lapidary work and is not recommended for glass. Disks are magnet backed for easy application and removal on lap grinder wheel heads. * Electroplated on fiberboard substrate with copper laminate for rust-free operation over the lifespan of the disk * Manufactured in U S A by a major manufacturer. |
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