1/2 Inch x 39 Inch SDS Plus Rotary Hammer Drill Bit, Carbide Tipped Concrete Drill Bit for Masonry; Brick, Stone, Concrete (1/2" x 37" x 39")

Excelente broca sólo que se me hizo cara pero bien

This drill bit held up much better than expected and it got the job done quickly. I was drilling through dirt and rock to get a three foot head start in driving an eight foot grounding rod. A few times when I would hit some rocks the drill bit would flex a lot more than what I was expecting, but it held up well and did not break. When it would start to flex, I would let up on the pressure until it was able to get a hole started on the rocks, then it was able to take more pressure. When finished, the drill bit did not show any signs of wear, such as bending or fatigue. And the carbide tip was also intact and showed no wear. I'm planning on using this for another hole through rock and dirt, so I have great expectations that it will get that job done too.

really good price, does the job. im quite happy with this purchase

Great cost effective drill. Had to drill through the rock for a Dockpole. It was a lot of work but the bit worked great!

Did the job, a cautionary note: do not press hard while drilling, let the bit do the work!