Feature: 1. [YG8 CARBIDE] Overall heat treatment YG8 cemented carbide material, with high hardness and wear resistance. 2. [DOUBLE SLOT] Double slot design grinder drilling bit has fast chip removal and high machining efficiency. 3. [EASY TO INSTALL] The rotating grinder bit is often installed and used on electric tools, easy to operate, and labor saving. 4. [FINE PROCESSING] The product has high processing quality and high smoothness, and can process various fine mold cavities. 5. [MULTIPLE USAGES] Widely used for processing metal products, jewelry and wood carvings, etc., for deburring and grinding, etc. Specification: Item Type: Grinder Drilling Bit Product Material: YG8 Alloy Product Model: LX1228 Slot Type: Double Slot Tool Shape: Conical Dome Shape Shank Diameter: Approx. 6mm / 0.24in Tool Diameter: Approx. 12mm / 0.47in Blade Length: Approx. 28mm / 1.1in Application: Widely used in 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 Grinder Drilling Bit Note: 1. When the cemented carbide rotary file is used on pneumatic or electric tools, the speed is generally 6000‑40000rpm/min, and the tool must be clamped.2. The cutting direction should move evenly from right to left, not reciprocating cutting like using a grinding wheel; be careful not to use excessive force (the pressure generally does not exceed 4 kg).