DEWALT Masonry Drill Bit Set, Percussion, 4-Piece (DW5204)

Ordered May 2013. Made in Germany, very good quality. I needed to drill 12 total 3/8" holes in my paving stones to anchor a gazebo. Started with the smallest bit and worked up to the biggest. Went way smoother and faster than I expected. I ordered two sets just in case but did not even open the second set. The last hole went just as smooth as the first so I would expect a good life time for the difficult application. I used a super cheapo Harbour Freight rotohammer to the tune of $35 because it would cost the same to rent one and now I have one in the tool chest for applications like this. I do not do stuff like this enough to justify buying a heavy duty quality rotohammer. These bits worked great but I do not think I would get the same results if I was using my regular non hammer drill.

Drilled 18 holes in a concrete wall in less than an hour and the drill bits are still in good shape.

I got this set because I needed to drill drainage holes in some hard pottery. Regular drill bits didn't work at all. When these arrived, I tried them out using my cordless drill. No luck. I switched to my more powerful corded drill. No luck. Heck. So I bought the cheapest hammer drill on Amazon that I could find. It was around $35. When that arrived I tried out these drill bits and it worked fine. Bottom line. These drill bits work -- but you need a hammer drill.

Installing a new patio in my backyard and had 3 concrete slabs to remove. They were far too heavy and thick to pick up in one piece Enter this concrete chisel. Technique used: 1) Drill pilot holes into concrete as deep as I could with the drill bits and a cordless dewalt hammer drill 2) Used Chisel (http://www.amazon.com/gp/product/B000NIBFT4/ref=cm_cr_mts_prod_img) and a sledge hammer to then break off pieces of concrete 3) used angle grinder to cut through the rebar The only hammer drill I had was a cordless Dewalt. i was concerned when purchasing these that the cordless drill would not be able to provide enough omph, but I was totally wrong. The concrete was a mix of stone and concrete. Two of the concrete pieces had rebar inside. These drill bits chomped through the concrete easily and showed no sign of giving up. Several times I had to stop work and let the drill bits cool down as there was smoke coming from the holes, but after a couple of minutes they were ready to go again. Another great dewalt product. All in all, great product for a great price. See pictures attached

It's like I had been living in a cave before using this. They went through my concrete wall like (relatively) nothing. I could feel the bit murdering the concrete into a dusty gravel, even when it came across the hardest sections where it would otherwise have seemed stuck. I had no idea my humble drill was capable of taking down concrete. And I had no idea how much specified drill bits can make the difference. I'm 20 years old and I'm very new to this world. But after trying this, I'm massively excited to start collecting all sorts of bits and discover what else there is out there. Regarding Quality: These things feel like no other regular bits. The metal used is much stronger, and you can tell right out of the box just by the interesting finish. Holding this tool in your hand really merits some respect. It feels strong and characteristic like a bullet. The spirals have a special recognizable pattern and the metal gives off its own characteristic smell. And they're a little yellow-ish. Telling these apart in a large toolkit will be a snap.

These drill bits have been great for masonry work. After using them several times, they're still holding up really well. They also work perfectly for drilling holes under pots (just spray a bit of water).

I bought this bit set not to place fasteners into concrete, but to drill drainage holes in the bottom of broken or discarded coffee mugs for the wife's plant nursery. Until I took up this curious habit, I had NO idea that enameled ceramic kitchenware could vary between soft-as-terra-cotta-clay and diamond-drill-dulling imperviousness. So far, the score is two wimpy cups shattered into fragments and 14 sturdier units successfully aerated. Of the lot of them, the Starbucks mega-mug was the most challenging, requiring five solid minutes of dedicated effort with serious bluing of the tip of the DeWalt bit in use. But it got the job done.

These Dewalt bits are an affordable set of 4. I needed a set around the house for some basic drilling, so 4 should be enough. Buy larger quantity to make it even cheaper. I suggest never buying random brand bits, because other than looking the same, the material is not the same. Brands like Dewalt have exact proprietary methods for hardening the metals. This provides drill bits that last a long time and stay sharp. I used these on concrete and went in with much less effort and speed than generic brands I had laying around. In fact that is why I got them, my arms cramped out as I tried to drill one hole with the generic brand.

I've only used the 5/16" bit so far, but it's gone through a bunch of holes in cement block like a champ. I'm expecting similarly excellent results from all the bits whether the holes need to be put through block, brick or concrete. The fit and finish is very good, with high-quality brazing holding the carbide inserts in place, and the pointed tip of the inserts work well when starting the hole. The bits are straight enough that I don't see anything problematic by eye during rotation in my cordless hammer drill, though the hammer drill does have a pretty good chuck in terms of runout. Oh, and the best part? The 5/16" bit was able to easily ream out multiple holes in 1/4" mild steel plate (the holes were probably around 0.310" or so) before shooting through the masonry behind the plate. No issues, and gave me a perfect fit for my brackets. Also, they're made in Germany, which helps.

Comprei por recomendação de um artigo avaliando várias brocas para ladrilhos. Estou muito satisfeito com a qualidade deste produto. Eu recomendo para quem quer fazer furos no azulejo.

I used the brill bit with my normal electric brill and they worked amazing. Drilled 10 holes to hang a TV in concrete real fast. Excellent quality and product

As brocas sao boas nas deveria vir numa caixa

Exactly as expected. Used immediately and did the job using a hammer drill. Took longer than I expected but eventually got it done.