10mm x 9mm Double Cut Ball Shape Tungsten Carbide Rotary File Bit Precise shaping and reliable material removal in a compact ball profile. This double cut tungsten carbide rotary file bit is designed for controlled grinding, deburring, and contouring across hard and soft materials. Key benefits Efficient material removal: Double cut flutes remove material quickly while reducing clogging, so you spend less time clearing debris and more time working. Smooth finishing control: Ball shape provides consistent contact for contouring, rounding edges, and refining curved surfaces. Long service life: Tungsten carbide construction resists wear and maintains cutting performance over repeated use. Versatile compatibility: Designed for use with rotary tools and die grinders that accept this style of bit. Main features Size: 10 mm x 9 mm for the ball head, offering a compact profile for detail work. Cut type: Double cut for balanced removal rate and surface finish. Shape: Ball profile ideal for concave surfaces, radius work, and point transitions. Material: Tungsten carbide for hardness and durability under frequent use. Typical applications Metalworking: Remove weld splatter, deburr edges, and shape small radii on steel, stainless steel, and nonferrous metals. Wood and composites: Carve contours, clean out tight corners, and refine shaped details in hardwoods, plastics, and resins. Mold, die, and work: Clean cavities, smooth transition zones, and prepare surfaces for finishing. Usage tips Use appropriate speed for the material to avoid overheating. Secure workpiece and use steady, light pressure for results. Wear eye and respiratory protection recommended for particulate control. This bit provides a practical balance of cutting performance and control for detail grinding, shaping, and finishing tasks across a range of workshop applications.