MATZ Small Straight Wheels can be mounted on conventional portable motor tools and used on a broad list of deburring, smoothing, and polishing applications. They can be used on countless operations requiring absolute control of metal removal such as in micro-deburring, relieving stress concentration areas, and polishing away fatigue lines, scratches, and other surface defects. Ideal for work on dies, molds, instruments, control mechanisms, electronic parts, jewelry, aerospace components, plastic articles, light castings, models, and super sensitive scientific devices. Maximum Safe Speed 25,000 Revolutions Per Minute. Best results are usually obtained at 30% to 80% of Maximum Safe Speed. Use light work pressure.