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7 inch x 1/4 inch. Zirconium Grain. 5/8-11 thread. Type 27 Raised Hub. Type 27 Disposable Hub Depressed Center Zirconium Grain Grinding wheels have a tough self-sharpening Grain with superior stock removal. They can be used in the toughest metal grinding applications for fast efficient stock removal but requires medium to heavy operator pressure for optimum performance. One per box. |