Features: Crafted from hard , this rotary burr delivers exceptionally durability and wear resistance, lasting 2X longer than standard milling cutter for prolonged metal grinding and engraving tasks. Featuring optimized chip flute geometry, the burr efficiently clears debris during operations, minimizing dust accumulation and tool jamming in steel/aluminum milling applications. Ideal for metalworkers, woodcraft professional , and DIYer enthusiasts requiring versatile materials removal across iron, steel, aluminum, and wooden surfaces. Performs reliably in workshops and automotive repair scenarios, maintaining stable rotation from 6,000-50,000 RPM for safe, unidirectional cutting on powered tools. Choose between single flute (precise carving) or double flute (aggressive deburring) A type configurations to adapt to specific rust removal or edged finishing projects. Specifications: Component: ( steel) Blade shape: cylindrical Grooves type: Type A—single grooves/Type A—double grooves Speed: 6000-50000rpm styles:6mm/8mm/10mm/12mm/14mm/16mm Applicable materials: iron, steel, aluminum, wood, copper, plastic Package Includes: 1pcs Grinding Head note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.