- Hard and wear-resistant construction: The shell is ABS and the grinding wheel is diamond. These materials provide high hardness and wear resistance, helping the sharpener survive daily use without deforming or breaking. - Stable operation: The bottom features four non-slip feet to keep the sharpener steady, maintain balance, and prevent shifting or slipping during sharpening. - Wide compatibility and strong adaptability: The multi-hole design fits drill bits from 3 to 12 mm (1/8" to 15/32"), and it can grind drills made of high speed steel, carbide, hardened steel, and high carbon steel. - Efficient heat management: Multiple air vents on the back promote effective heat dissipation, protecting internal parts and enhancing user safety during use. - Practical and portable: Compact, portable design suitable for home use or a small workshop, easy to store and move as needed. Use scenarios: - In a home workshop or garage, refresh dull bits (3-12 mm) to restore cutting efficiency for wood or metal drilling tasks. - For metalworking projects, sharpen carbide or HSS drill bits to maintain clean, precise cuts. - Keep a ready set of sharp bits for common DIY jobs such as cabinet assembly, furniture repair, or general home maintenance.