Sait 77890 4-1/2" x 7/8" Series 821-Hard Density-Medium Grade-Silicon Carbide Unitized Type 27 Non-Woven Wheel 4pkSait Series 821-Hard Density-Medium Grade-Silicon Carbide Unitized Type 27 Non-Woven Wheel. Provides high stock removal, long life and productivity. Very durable on edge. Stainless steel, aluminum, high tensile steel. Ferrous and/or non-ferrous metals. Specifications: Max RPM - 10000. Tech Info: Constructed by bonding and compressing layers of non-woven material. Hot pressed to form a solid block from which wheels are out. For use with Die Grinder and Angle Grinder.
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