BEST OVERALL: DeWalt Rapid Load Carbide Masonry Drill Bit Set ↓ Jump to Review BEST ... so the tip of the bit will be given a coating to make it harder and more durable. The most common tip ...
In addition, this makes them more cost-effective and durable. Countersink drill bit sets composed of this material tend to be sturdier and are best suited for drilling through ceramic tiles ...