The cemented carbide rotary file is one of the crucial tools in fields like metal processing, mold manufacturing, and craft carving. It is applied to grind, cut, and trim various materials, including metals (such as stainless steel, quenched steel) and non – metals (like marble, hard wood). Working under high – speed rotation (usually 15000 – 30000 revolutions per minute), it excels in scenarios requiring high – precision and efficient material removal. These rotary files can effectively remove burrs, finish surfaces, and machine complex contours. The conventional ones come in diverse shapes (such as cylindrical, ball – headed, conical), enabling efficient and accurate processing on different surfaces, thus meeting various industrial and crafting needs.