ACC-150 Anti-Corrosion Concentrate makes the water corrosion inhibitant and protects your diamond grinding wheels to prevents them from rusting. The anti-corrosion concentrate is always used for wet sharpening with diamond grinding wheels. Anti-corrosion concentrate won’t harm your regular grindstones if you have it in the water, so you can keep treated water if you want to switch between a diamond grinding wheel and a grindstone, and then back again.