Purpose Hard Alloy Rotary File is widely used in grinding tool manufacturing, chamfering, rounding, and groove processing of mechanical parts, as well as cleaning of burrs, burrs, and welds in cast, forged, and welded parts, as well as pipelines. Smooth processing of impeller flow channels, and arts and crafts carving of metal and non-metallic materials (wood, bone, jade, stone). Instructions Hard Alloy Rotary File is mainly used in electric or pneumatic tools (can also be installed on machine tools), and the driving speed is generally 6000-50000 rpm. double slots The double slots pattern is overlapping and more suitable for objects with relatively low density. For example, used on materials such as wood, plastic, and aluminum. The cross shaped chip removal is fast and can easily block the grain during polishing and carving, so double slots on soft objects are more suitable single-slot The texture of a single-slot determines that it is not suitable for processing softer materials, because when cutting softer materials, debris can easily block the groove, causing the texture depth of the groove to become shallow and the cutting ability to decrease, which is commonly referred to as the knife being not fast. Single slot is more suitable for harder materials such as iron, copper, and steel. Special Reminder: To prevent debris from splashing during work, please wear protective glasses