Masonry drill bits long are designed for drilling into hard brittle materials such as stone, brick and masonry. The tip, made of tungsten carbide, is exceptionally hard. When the bit becomes too blunt to use it is better to buy a new one. In harder materials like concrete use an SDS bit with a special SDS power drill.
|Product Title||Eureka Concrete & Masonry Drill Bits - Long|
|Drill Tip||Tungsten Carbide|