These mini corundum grinding wheels are the smallest grinding stone in the world,which was made by a different tech.
It is widely used in the production of very small hole like bearing inner hole grinding, oil pump, oil nozzle and the inner hole of various workpieces.
Need this or other customized grinding tools,feel free to contact.
Brand:forturetools web: https://www.forturetools.com
Main Products:grinding wheels/other abrasive tools
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