Top Seller  ELECTROPLATED DIAMOND ANGLE GRINDING WHEEL - 4 1/2" Tackle automotive bodywork, tiling, tuck pointing, and masonry, with ease.  Our highly durable electroplated diamond angle grinding wheels can cut and grind an impressive variety of materials: ferrous metal, cast iron, ductile iron, stainless steel, aluminum, tile, marble, stone, slate, cement, masonry, concrete, rebar, and more. Purchase with confidence ― Millner diamond angle grinding wheels carry an unconditional lifetime replacement guarantee.  Key features: Made from alloy steel for superior longevity Diamond edge for accuracy and consistency Clearing channels help reduce buildup in softer materials Multi-functional with variable grit (40 grit on the edge and front face for aggressive cutting and grinding/80 grit on the back for finer grinding and sharpening) Safer than traditional wheels with fewer sparks and specially designed cooling slots to reduce heat during extended use Please note, recommended for use up to 15,000 rpm. Download spec sheet