Fischer 545692 D-SDX 6 mm Cylindrical 4-Cutting Edge Drill Bit for Concrete and Stone Wall, Tungsten Carbide Plate, for Common Drill with Cylindrical Adapter

Great drill bits works well

I brought 4 of these because some of the reviews said they were not that good.Well I tell you now I am pleased that I did, not only did they preform extremely well but I only used one drill bit to drill 9 not 1 but 9 holes into an old flint stone building for a support bracket.To say I’m pleased and happy is without a doubt an understatement.

did what i expected good quality

This is a great drill bit. Only wish I’d bought it sooner.

I bought this to drill holes in limestone building blocks to mount a handrail with rawlbolts. With a hammer drill it worked exceptionally well.

Having recently moved to a new home I have plenty of jobs to do involving drilling into walls and this drill performs better than any masonry drill bit I've had in the past. Highly recommended.

This is useless.I have lots of masonry bits which were not coping with very hard concrete so having read the reviews I bought this. No better than an cheap masonry bit. Can't return it as I had to use it to find out it was useless.

No better than a normal masonry bit overpriced