Diamond cut-off wheels are the new standard for metal cutting and offer many advantages over conventional abrasive discs. Use for cutting through all ferrous and non-ferrous metals including sheet metal, pipe, metal plate, steel bar, angle iron, ductile iron and rebar. Diamond cut-off wheels last many times longer than abrasive wheels while delivering a constant cutting depth. The high quality super-abrasive diamonds are vacuum brazed to a steel core creating the strongest possible bond. - Delivers 1,000's more cuts than abrasive wheels without having to constantly change the blade. - Heat-treated hi-speed steel core dissipates heat and minimizes the risk of breaking or warping. - Diamond cut-off wheels maintain a constant cutting depth throughout the life of the blade. - Use on most hand-held grinders and trim saws. 3-Pack includes 3 diamond blades.