TITGGI Professional Masonry Drill Bit Set (10PCS) for Glass/Brick/Plastic/Cement/Wood/Tile/Etc, Industrial Strength Carbide Drill Bit Tip, 1/8"-1/2"

I don't really understand where such a high rating for these drill bits comes from. My experience: One drill bit barely lasts for one hole. After that, the drill bit tip completely breaks down. Terrible quality.

These work very well.. truly high speed cutting. Nice little storage kit, decent length, easy to install, shows no sign of future bending, and accuracy is on the nose. Nice job although they feel like it will get dull after about 10-20 uses, I'll update if necessary.

Went through concrete like butter

Pleased with the quality. It did what it’s supposed to do. I used my regular Dewalt drill to drill a hole into concrete. I DRILLED FAIRLY SLOWLY AS TO NOT OVERHEAT THE BIT. AND LET IT COOL BETWEEN HOLES.

It was what was promised and came with extra bits.

These were exactly what I needed to drill holes in tiles to make Christmas ornaments. They worked really well.