1. Simple to use, just attach it to your grinder and adjust the grinding angle to meet your specific needs 2. Wide range of application: this multifunctional product can grind all kinds of drills, including high speed steel, carbide, oil bar drills, cobalt drills and so on 3. Made of plastic with excellent anti-fatigue and insulating properties to ensure long-lasting performance 4. With grooves that fit various sizes, allowing you to easily polish drills at different angles 5. Compact size makes it ideal for on-the-go or on-site work 6. Size: about 122 x 102 x 12mm 7. Weight: about89.5g