Hole Saw Kit for SDS Plus, 65mm SDS Plus Shank Hole Saw Cutter Concrete Cement Stone Wall Drill Bit

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.

I recently used this cement wholesale bit, and it absolutely met all my expectations — and even exceeded them. It drilled right through the concrete with surprisingly little resistance, cutting clean and fast without much effort on my part. I was impressed by how efficiently it handled the job, even on tough, dense concrete. The only minor complaint I have is that the center bit kept loosening during use, which meant I had to stop a couple of times to tighten it back up. That was a bit inconvenient, but honestly, it didn’t take away too much from the overall performance. Overall, this is a solid, high-performing bit that really delivered. If you’re looking for something that powers through concrete and holds up well under heavy use, this is definitely worth considering.

It did it's job, all be it it took a long time (could have been the hammer drilled fault more than bit) I used a long bit of the same size as pilot to complete the hole through the curb. Using a Hilti TE7 it took me almost a hour and a half to completely drill the hole. Got good at taping the trigger, and running it one handed. I had the pilot bit come loose once, tightened the set screw again, and actually in the process of dripping the outer portion of the screw broke off. Overall it did work as intended. I do think the drill lacks forward driving force, and I did have to stop and chip out pieces of the concrete. (Wish that drill had the hammer only function for chissels.) But a great buy for the price!

Good quality and works well. Used it to bore through 2.5 inches of pavers so far and it does not show any signs of dulling. You should run water in the hole while cutting to keep it cooled. When you are done using it for the day, clean it off and coat it with oil. If you don't, it will rust! Packaging was less just OK. There is a plastic tube for the shank and a container for the hole cutter. Mine was shipped with the plastic tube open because the two parts of the tube together would not fit in the box. It appears to come from the manufacturer that way. Other reviews indicate the hole cutter is not centered/balanced. My guess is that they are not using and SDS chuck and the shank did not center in their drill's chuck. I used a standard drill chuck that has 3 pins and there is no way the 4 sided SDS shank will center in it. It's not a horrible shake, but keep this in mind if you plan to use a drill with a standard chuck.

I had to make room for a 2" drain for my outside cabana. This bit had no problem cutting thru 8" cinder block with a 1/4" split face travertine veneer. I rented a 1" roto hammer from HD and was done in about 30 minutes. One thing I would HIGHLY recommend is use water. In just about every case it will ensure the longevity of your bit and quicken the job. I just hung a garden hose and set my sprayer to a "shower" and kept it pointed on the hole. The bit chewed thru the material with no issue. Without water, I'm not sure how I would have fared. Also a quick tip: Put grease on the threads before you attach the bit to the shaft. It will make separating them easier after the job is done and should prevent "cold" welding. For those that haven't used a bit like this, You want to use the core bit with its drill bit piece for only about 1/2" after that(hammer action OFF), take the drill bit out and then just use the core. I still got a little wobble in the beginning, but the cut came out great. I also just took the bit out every 1" or so and the debris came with it (no need to chisel it out). I would definitely buy this again.

Did the job without any issues. Read a review that the pilot bit wasn’t great so I prefilled a pilot hole first and the hole saw went to town on concrete. Drill 4 blind holes about 3” deep. Chipped out the core every 1” or so to prevent binding. Also used a good rotary hammer drill for the task. Hole saw has very limited to zero signs of wear so I’m certain it has a lot of life left.

I used the Hanperal 65mm SDS Plus Shank Hole Saw Cutter attached to a HD hammer drill to bore three holes through an 8" wide CMU retaining wall in order to install drainage pipes. Two of the holes took about 30 minutes each to complete and resulted in a pair of clean/smooth holes. I encountered rebar while boring the third hole and it took almost an hour to complete. The resulting hole was not as clean as were the others but it was good enough for my purposes. The Hanperal Hole Saw Cutter worked better than I anticipated and I was a bargain at the Amazon price.

I bought this to drill for coolant pipes for a ductless AC unit, the price was just right for a tool that i will rarely need and below are my findings: 1-the center drillbit keeps coming loose and falling offas you are drilling i tried to tightened the lock screw as mich as possible but still fall off 2-the hole saw itself is good i removed the pilot bit when the holesaw itself caught on and from there the job was as easy as could be 3- light weight copared to the heavy duty ones which tells me it is not designed for a tradesman that uses everyday 4- the three stars rating is because of the useleff pilot bit and the poor construction however overall i am glad i purchased this bit and didnt have to rent one from hime depot that woukd have cost about the same for something i had to return, now i got the job dobe and i still have this baby for future use

Worked will with my hammer drill, to drill a hole in a cinder block

Travail parfaitement avec perceuse ses Moins chère que la location

Super good will buy again

Drilled through the 8” foundation with no issues and very quickly!