| Approx 5"--124 / 127mm diam Diamond coated disk. With 12mm spigot on the back. | The disk is coated with diamonds 300 - 350 grade or D54 micron
The disk is approx 12mm thick so the edge which is also coated gives a grinding area simmilar to a slightly worn 6" X 1/2" grinding wheel. | | The big difference with this disk is that it does not get smaller and takes a long time to wear out and can be re diamonded when this happens.
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