This high-hard alloy eccentric drill bit is designed for impact drilling into a variety of materials including concrete, porcelain, steel bars, and brick walls. With four cutting edges, this upgraded drill bit provides efficient and precise drilling performance. Its durable construction ensures that it can handle tough materials with ease, making it a versatile tool for both professionals and DIY enthusiasts. Upgrade your drilling experience with this reliable and high-quality drill bit that offers exceptional reliability and performance.