Bosch Professional 1x CYL-5 Concrete Drill Bit (for Concrete, Ø 8 x 150 mm, Robust Line, Accessories for Impact Drills)

These drill bits are extremely sturdy and have gone through everything theyve been asked to. Bear in mind that the bits are only as good as the drill they're in.

I have used these for a few years, and found them to be the best in regards to longevity.My biggest test was putting battens onto concrete blocks for a dry wall project. Lots of drilling, and we burned through quite a few bits I had in my toolkit, but these bosch ones were the best as they lasted the course.I've used them in concrete blocks, light blown blocks, bricks and concrete, they work well.Note the pro ones have the green/blue paint in the recesses, there are also low quality, lower price options from Bosch that don't have the paint.I bough the Amazon set when they were on special, much better deal than buying them individually at full price, and a similar price for cheap, non-brand ones from most DIY stores, where they tend to be made out of cheese.My biggest tip is not to let any drill bit get too hot, and one of the biggest causes is the dust from the drilling. So stop frequently and pull the bit out to get the dust out, and then restart drilling.

Good quality.

So much better than cheaper non branded drill bits. From initial use I think these should last well.

Saved me a lot of money, thought my drill was not up to it but bought these and went through brick and concrete in a matter of seconds.

Quality product. Not sure how long they well last

Works great

The drills are excellent in drilling concrete as long as you use a mains drill not very good using battery drill

Realmente cumpre o que promete e aumenta a eficiência da furadeira. Eu tenho uma Bosch 18V 180-LI e com essa broca todos os furos tamanho 10 para prateleira que tive de fazer, em alvenaria (tijolo 6 furos), foram feitos sem dificuldade. Material de qualidade.

Ótimo produto, fura sem esforço

Usei essa broca com a máquina comprada no mesmo momento, uma bosch de 850w, para perfurar uma parede de concreto de 15cm e fiquei impressionado por ter atravessado a parede em menos de 3min! Uma ótima combinação!

Alta qualidade

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