1. Reliable Material: The double layer blade grinder stone wheel is crafted from quality corundum through precision processing, ensuring moderate hardness for effective grinding while minimizing wear. This extends the service life and reduces replacement frequency. 2. Efficient Grinding: Featuring a unique double layer grinding wheel design and optimized grinding angle, this tool quickly removes the passivation layer and rust from knife edges, delivering sharper and smoother results. Compared to traditional whetstones, it saves significant sharpening time and boosts work efficiency. 3. Fine Craftsmanship: Every detail of the double layer sharpening drill bit is meticulously polished and processed, guaranteeing a smooth, even surface with uniformly distributed grinding particles. This enhances grinding performance while improving overall aesthetics and wear resistance. 4. Easy Installation: The grinding drill bit is designed for quick and effortless installation—simply attach it to your drill and start using it. It efficiently restores dull blades to sharpness, significantly improving your work efficiency.