Bosch Professional 7-Piece CYL-3 Concrete Drill Bit Set (for Concrete, Ø 4-10 mm, Accessories for Impact Drills)

Wow these bosch drill bits are real badass,cut through concrete like nothing.

Bought to replace worn out drill bits. Worked well in concrete as expected. The storage box is of good quality.

In general they are a decent set of drill bits. I used this to attach a bracket for an outdoor washing line. The drill bits made short work of mortar between the bricks but took a little time with the brick itself. After a four hole drilling session the bits seem to have stood up as well as can be expected and still had a decently sharp and shaped tip. I did try a set of cheaper ones and they blunted within a minute, so even though these cost a little more, the performance is worth the extra costs.

Had these before they are long lasting

First thing to get out the way is that I use standard bits for indoors and normal brick only, preferring to use SDS for heavy duty jobs - larger holes or harder materials. Although these are listed as concrete I really buy them for longevity rather than actually using them on concrete. Again, I would use an SDS drill and bits for concrete and harder materials like engineering brick. Used on softer materials ( standard block and brick ) these will last a very long time, making them excellent value. I bought this set to replace the last set I bought about ten years ago!! So yes they do last a long time as long as you take reasonable care with them. A very important feature of this set is that it has a 7mm bit. Most sets do not. I don't know about you, but I use 7mm wall plugs for No.10 screws. You can buy 8mm wall plugs instead but it seems a lot easier to just buy a set of bits with a 7mm bit!! It's unfortunate that this set doesn't include a 5.5mm. Oddly that size is sometimes useful for 5mm wall plugs. Don't ask me why but that slight over-size is helpful with some materials, especially plaster. To complement the set, I also buy 3mm drills of the same type. You may wonder why(!) but I find the 3mm drills as an excellent starter when I really need to position the hole accurately. Anyway! They are great drills, buy some!

Bought these to drill into a concrete fence post and they were really effective.

I was using a cheap masonry drill bit that came in a large case of bits and it was taking me over 5 minutes to drill into the concrete walls so I decided to get these. Wow! It now takes 10 seconds instead of 5 minutes. These are great drill bits. Do not buy cheap drill bits as you will be wasting so much of your time.

Well worth paying for a very capable set of masonry bits. I definitely recommend them.

Good quality

Henüz kullanmadım fakat paketlemesi, ürünün kutusu ve uçların hissiyatı üst düzey.

Dovevo perforare delle piastrelle in klinker nel bagno, notoriamente molto resistenti ma allo stesso tempo facilmente scheggiabili. Ne ho provate altre (poi restituite) che si sono spezzate nel foro provocando un notevole danno (poi risolto grazie ai ricordi dei consigli di mio padre grande hobbista). Con queste punte non ho avuto problemi, foratura semplice e fori precisi senza sbavature. Sono solide e non si sono assolutamente usurate nonostante numerosi fori fatti; le consiglio anche per un uso intenso.

Epey önce aldım ve uzun zamandır kullanıyorum. Çok memnunum.

Always good! Cut through the masonry really well!