Bosch 2608597678 CYL-3 Concrete Drill Bit, 5.5mm x 90mm x 150mm, Silver

These aren't the longest lasting drill bits I've ever used, Though it's hard to find a 5mm that is. But at the price point and trust in the Bosch brand, it was an easy decision to buy.*** Pros ***- Works very well- Fits into the Bosch drill bit caddy (the multi-pack one)- Comes oiled so it won't rust- Good value- Lots of sizes available- Trusted brand*** Cons ***- Doesn't last all that long, but also it's rare to find a good 5mm that does*** Overall ***If you need a 5mm drill bit, then this is a great choice. There are others that are cheaper and that should last as well, but for me I'd rather spend that bit extra getting something I know works well.

As you would come to expect from Bosch, these are good quality bits, only used/needed to use a couple of them, but they work great.

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.

Good quality drill bits

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!

Much better than the usual Chinesium rubbish you'll get for less.

You know there going to do the job,

classic drillbit, nice and substantial. makes mincemeat of the wall, creating a nice tubular hole, which is almost a shame to fill up with a screw.

Arrived on time! Excellent quality

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Le punte da trapano Bosch sono eccezionali! Ho avuto modo di provarle su vari materiali, dal legno al metallo, e sono rimasto davvero impressionato dalla loro precisione e durata. Il design è ben studiato, con una geometria che consente fori puliti e precisi anche nei materiali più resistenti. La qualità del rivestimento è ottima, non si consumano facilmente e mantengono una performance costante anche dopo numerosi utilizzi. La compatibilità con diversi trapani è perfetta e l’affidabilità del marchio Bosch non delude mai. Le consiglio senza dubbio a chi cerca punte performanti e durevoli! Un acquisto che vale ogni singolo centesimo!!!