Compact and portable design to keep drill bits sharp and performing at their anytime, anywhere. This sharpener maintains the sharpness of drill bits for performance. Easy to use. Fits 10 size bits (3 mm to 12 mm) and is designed with user friendliness in mind. No special skills required. Simply attach it to your grinder and adjust the grinding angle to meet your needs, making sharpening effortless. Durable material. Made from quality plastic with insulation properties and strong fatigue resistance. It retains its shape over time, providing reliable performance in diverse working environments. Wide applicability. Can grind various types of drills, including speed steel, fried dough twists drill, cobalt drill, etc. Used with angle grinders to achieve better grinding results. Compatible with both manual angle grinders and electric angle grinders. Use scenarios In a metalworking , use this sharpener to restore dull bits quickly, maintaining performance between tool changes. On a job site, attach to your grinder to sharpen bits in place, reducing downtime and equipment swaps. For home DIY projects, keep 3 mm to 12 mm bits sharp and ready for use, extending tool life and consistency.