Features: 1.Multipurpose: Widely used for metalwork, model engineering, wood carving, jewellery making, welding, casting, deburring, grinding and sculpting. 2.Carbide Burr File: Rotary file is made of heat treated tungsten steel, which is high hardness, wear resistant, not easy to break, strong and durable. 3.High Efficiency: Mainly used on pneumatic or electric drive tools, the speed is generally 6000 50000 rpm, greatly improving work efficiency. 4.Wide Application: For copper, aluminum, steel, marble, wood, etc., it can also be used in machinery, aviation, automobiles, ships, etc. 5.Tips: When using, the tool should be clamped upright, and the cutting method should be up milling to avoid reciprocating cutting and prevent debris from flying.Specification:Item Type: Rotary Burr File Material: Tungsten steel Color: Silver Applicable: Suitable for aviation, automobile, ship surface grinding, etc.