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DeWALT 4" Diam, 2" Overall Thickness, 16 Grit, Type 11 Tool & Cutter Grinding Wheel Very Coarse Grade, Silicon Carbide, R Hardness, 9,000 RPM DW4961 - 08702136 - Penn Tool Co., Inc
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DeWALT DW4528 - HP 4-1/2" Type 27 Concrete/Masonry Grinding Wheel (1/8" Thickness, 7/8" Arbor, Silicon Carbide) - Walmart.com
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