Specification: Item Type: Ball Shape Burrs File Material: YG8 Alloy Model: DX1210 Slot Type: Double Slot Blade Shape: Ball Shape Blade Shank Diameter: Approx. 6mm / 0.24in Blade Diameter: Approx. 12mm / 0.47in Blade Length: Approx. 10mm / 0.40in Uses: Widely used for metal products, tool manufacturing, engineering, model engineering, wood carving, jewelry manufacturing, welding, chamfering, casting, deburring, grinding, cylinder head transplantation and carving Package List: 1 x Ball Shape Burrs File Note: 1. When the cemented carbide file is used on pneumatic or electric tools, the speed is generally 6000‑40000rpm, and the tool must be clamped. 2. The cutting direction should move evenly from right to left, and reciprocating cutting cannot be performed like using a grinding wheel, be careful not to use excessive force (the pressure generally does not exceed 4 kg).