Features:

  • Made of carbide tipped metal material,very durable.
  • Simple operation, easy to use,and fast perforated.
  • Used for drilling walls, stones, bricks,or installation of air-conditioning etc.
  • SDS plus shank, male thread Adapter,Greatly replace the broken adapter with your drill chuck.
  • High-frequency welding technology, welding openings is very strong, smooth inside and outside welding mouth.
Drill worked perfectly to drill a hole in a concrete ...

Drill worked perfectly to drill a hole in a concrete flagstone (to allow my sprinkler head through). The drill bit did not even get scratched - it really is a heavy duty product. What surprised me is that it actually fit in my Ryobi 18-Volt ONE+ 1/2 in. Cordless Hammer Drill (https://www.amazon.com/gp/product/B00N1N7HEA/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1). The bit lenght is longer than it looks, but as you can see from the attached pictures it fit and worked properly.

This bit was worth every penny. Fence post holes in rock, accomplished on a budget thanks to this bit.

I had to drill some holes in solid but decomposing granite for fence posts on the hillside in my backyard. Combining this bit with an HFT hammer drill was perfect. I did not want to spend a lot of money, as this was a one-off project. While drilling rock is not fast, this little bit did the job, and could probably drill another 100 holes before getting dull. Having a water hose nearby is a must. It cools down the bit, lubricates the cutting action, and you will need to wash or spray out the build up inside the bit from time to time (wash it out during and right after drilling, or that stuff becomes like concrete inside the bit).

Great, inexpensive solution to tough concrete drilling problems.

I'm running a 2" PVC conduit between two buildings and the conduit had to be below grade. First structure is cinder block foundation with poured concrete in the block cavities. Using an older Ryobi 1/2" hammer drill, I got through the cinder block fairly quickly, but it was clear I was going to burn up the Ryobi to get thru the concrete. And the plain chuck of the Ryobi didn't want to hold the SDS bit for more than 30 seconds at a time. For any type of tough job, a drill with an SDS chuck is the right answer. Rent or buy if you don't have one. I decided to invest in an SDS drill because it was still cheaper than calling a pro to drill the holes, and I have future uses in mind. Ended up buying a Bosch Bulldog Extreme SDS Plus. Great tool for a reasonable price. The Bosch with this bit did a phenomenal job getting thru the concrete. Still not any easy job. The hole in the second building was entirely thru concrete. Both holes required 10" depth for the penetration. It took me about 2 hours per hole, but the bit never stopped performing. Tips: Even though I tightened the pilot bolt with a wrench, it would occasionally work loose. I found that a few wraps of masking tape around the bolt and shaft kept it in place well enough to prevent he pilot bit from coming out of the assembly. For faster deep drilling: An SDS chisel bit for knocking out the "core" that forms as you go deeper. Found the bit worked more quickly if I occasionally used the SDS chisel bit to remove the cored piece left behind by the hole cutter. That was easy to do. It also gave the hole saw a little time to cool between drilling sessions. Hard to believe this bit was twenty bucks. And the Bosch Bulldog Extreme hammer drill can be had on sale for just over $150 and should last a casual user a lifetime or two. 09/2018 EDIT: After boring nearly 40" of mostly concrete, I've nearly worn out the bit. 4 of the 8 carbide cutters have come out of the bit. It will still cut, but it's slower going, and I expect those remaining cutters won't last more than another hole or two. Do not take this update as a negative. I am not changing my five star rating. I put this bit to an extreme test: Boring 10 to 12" of very hard concrete at a time. Drills bits do wear out. For lighter duty work, this will last a very long time. In this case, doing very heavy duty work, the bit lasted a perfectly reasonable amount of time, completing the work I needed done. Would buy again in a heartbeat if I needed to do this again.

PERFECT

Well Made Product - Excellent Price - I used this in a 1/2" Milwaukee Hammer Drill without the hammer working. I was too lazy and cheap to find and rent a SDS Hammer Drill. It took a while, drilled 2 perfect size holes in 27 year old brick and mortar which was rock hard. I did not have a problem with the pilot bit. I tightened the bolt with a small crescent wrench and bit was still secure when finished. Love to know what country this was made in. Last check no surface rust. The person who shipped this item was very conscientious. All pieces was individually wrapped in bubble wrap and taped securely!

Great tool at a great price

Used to go through 4" concrete wall. Got a $400 bid from a contractor who could only do it when he "had time". This seemed like a no brainer to at least try with my Bosch impact drill. The bit arrived and I was impressed with the quality. It did a great job making clean cut. To get the depth I needed, I ran it in, then switched to a chisel bit, cleaned out the hole, and then ran it until done. Since I'll probably never drill another hole like that again, it's great to be able to get this without breaking the bank. Pros: Sturdy, quick cutting, smooth hole walls. Cons: none.

Cheap, works

Used in a standard 1\2 chuck hammer drill(Not SDS), it still functioned but was wobbly from being off center because it wasn't fastened using the correct drill. Even so, it went through the 12 inches of concrete I needed it to without fussing. It hasn't seemed to have lost any life over it and could likely be used for several more projects. at 20$ you can't lose. I had no issues with threads and only threaded it on once.

Well worth the money!

I buy a lot of things that does not work but this isn't one of them. I needed to run two central AC lines through my foundation. The bit shaft fits in my 1/2 electric drill just fine. Mind you it is not a hammer drill just a regular milwaukee drill. A cement block has two walls that are about 2 inches thick. So I put the drill on low and ran it 1/2 speed and put medium to light forward pressure on the drill. It consistently walked through both walls. Each one taking about 4 minutes. I could probably speed it up and push harder and went through in less time but I wanted to try to save the bit sharpness. It worked perfectly. Absolutely perfect. Money well spent!

Good bit

Used this for a sump pump installation project in my crawl space. Used it to drill a hole in the concrete skirting of the crawl space for the 2 inch outlet pipe from the sump pump. The bit worked great. Drilled roughly 8 inches of concrete using my hammer drill. Took me between 30 to 45 minutes but was also laying at weird angles. The hole was very straight and didn't have any chunks missing around the edges.

Simple answer to an otherwise expensive problem.

We put in a pool last summer and forgot to add one of the sleeves for the volleyball net when the concrete was being poured. Purchased this to drill one hole through the thickest part of the concrete and purchased the Hiltex 10513 1-1/2 Inch SDS Rotary Hammer Drill to go with it. (custom net, sleeves, etc were purchased through Cool Pool Products. On a side note, the volleyball sleeves were brass but we also purchased several of these to scatter around the concrete: https://www.amazon.com/Concrete-Umbrella-Volleyball-Holder-Assembly/dp/B0128JNCJG/ref=sr_1_cc_5?s=aps&ie=UTF8&qid=1500141893&sr=1-5-catcorr&keywords=umbrella%2Bsleeve&th=1 Now that we have the bit and drill, we are going to add a few more umbrella sleeves. Does take some time and patience and an extra person with a wet vac suctioning out the debris is helpful. The concrete guy was going to charge us several hundred dollars to come out and do what we were able to do in a short afternoon.

Job done. Thanks!

A good price. Happy that the tool got the job done for me. I needed one 2.5” hole through my 8” fully cured concrete foundation. This took atleast 45 minutes with my Makita 2641, 8amp sds hammer drill. It was not fun, a bigger drill would have been faster. I would not drill multiple holes with my underpowered set up. Should have brought a beverage with me to the crawlspace. Yes, the bolt that holds the pilot bit in place loostens up, but once the hole is started, it is not really needed. I could have spent more effort to tighten it up but did’t bother. Lots of dust created, so prepare for that if necessary, and bring a good quality mask with you. Silica dust is worse than I realized, from what I’ve heard.

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