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Concrete Hole Saw Kits, Tungsten Steel SDS Plus Shank Wall Hole Cutter Cement Stone Drill Bit Sets 1-2/11, 1-3/5, 2-4/5 Inch(30, 40, 60mm), with 8-7/10 Inch(220mm) Connecting Rod, 3 Center Drill Bits

4.3 4.3 out of 5 stars 709 ratings
$26.99
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Purchase options and add-ons

Material tungsten steel and alloy
Finish Type Steel
Shank Type SDS-Plus
Brand Knugoua
Item dimensions L x W x H 7.5 x 2.36 x 2.36 inches

About this item

  • Material: The concrete hole saw kit made of tungsten steel and alloy, high-frequency welding technology, welding openings is very strong, smooth inside and outside welding mouth. Ultra-sturdiness and durable, easy to opearation, and long service life.
  • Long SDS plus shank: Come with a SDS puls shank for this cement drill bits, male thread adapter design, match your drill chuck fastening and much more improve speedier drilling
  • Size: 3Pcs concrete hole saw, 1-2/11 Inch(30mm), 1-3/5 Inch(40mm), 2-9/25 Inch(60mm). 1pcs SDS connecting rod 8-7/10 Inch(220mm). 3pcs center drill bit 4-1/3(110mm).
  • Widely application: This cement brick electric hammer drill bit widely used for cutting clean holes in concrete, brick and block work, drilling walls, stones, installation of air-conditioning, etc.
  • Warranty: We promise provide you satisfied after sale service, if there is any problem, Please contact us directly, we will refund you full payment or send you a new replacement.

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Product details

  • Product Dimensions ‏ : ‎ 7.5 x 2.36 x 2.36 inches; 3.1 Pounds
  • Date First Available ‏ : ‎ June 20, 2019
  • Manufacturer ‏ : ‎ Knugoua
  • ASIN ‏ : ‎ B07VB72L87
  • Country of Origin ‏ : ‎ China
  • Customer Reviews:
    4.3 4.3 out of 5 stars 709 ratings

Product Description


Features:
Made of tungsten steel and alloy, high-frequency welding technology, welding openings is very strong, smooth inside and outside welding mouth.
Widely used for installing the Air Conditioner, Oil Fume Exhauster and Sewer Pipeline Hole Open ect. Mainly work on the Opening Hole
SDS plus shank, male thread Adapter,Greatly replace the broken adapter with your drill chuck.
Specification:
Material:
Body of Hole saw drill bits, Alloy.
Tip of the drills, Tungsten steel
Size:
3Pcs concrete hole saw, 1-2/11 Inch(30mm), 1-3/5 Inch(40mm), 2-9/25 Inch(60mm).
1pcs SDS connecting rod k 8-7/10 Inch(220mm).
3pcs center drill bit. 4-1/3 inch(110mm)
Package included:
3Pcs concrete hole saw drill bits
1pcs SDS connecting rod
3pcs center drill bits
1pcs screw

What's in the box

  • Screw

    • Looking for specific info?

    Customer reviews

    4.3 out of 5 stars
    4.3 out of 5
    709 global ratings

    Customers say

    Customers like the speed, value, and performance of the concrete hole saw set. They mention that it works fast to cut holes in some half-slab fire bricks, and that it chops through the cement blocks fast. That said, some complain about the tightness, durability, and quality.

    AI-generated from the text of customer reviews

    20 customers mention20 positive0 negative

    Customers appreciate the value of the drill bit. They mention that it's a great tool for the money and works great.

    "...the 2" cutter, but it worked better than anticipated considering the low cost." Read more

    "This set of core hole drills was a really good value. I had to drill through concrete block to install conduit and it went through in seconds." Read more

    "...hole for plumbing through a concrete slab...they did the job at a reasonable cost...." Read more

    "Excellent price point for what you get did the job with easd ! Cost 1⁄4 of what it would cost somewhere else especially" Read more

    15 customers mention15 positive0 negative

    Customers are satisfied with the performance of the drill bits. They mention that it works well for the price, and is great for the money. Some say that it worked well on concrete block wall.

    "Very good, work nice." Read more

    "...And they've worked incredibly well especially for the price at a fraction of the cost of a name brand core bit...." Read more

    "I had to go down 4” and this item worked great...." Read more

    "Hole saws worked good going through a foundation. Only thing that slowed me down was the screw they give you for holding in the drill bit...." Read more

    9 customers mention7 positive2 negative

    Customers like the speed of the concrete hole saw set. They say it works fast to cut holes in half-slab fire bricks, and it's easy to use. They also say the bit cuts through block walls easily.

    "...The brazing on the cutter heads are well done (I'm a welder so I do know what I'm talking about) and the shaft fits a Bosch rotary hammer drill...." Read more

    "...And most of the holes I've done have been with the largest bit. It cuts great, very true and round, it doesn't try to walk around even when you're..." Read more

    "These items are easy to use and the chomp through the cement blocks fast...." Read more

    "...It's not as fast as a large hammer drill but for the bulldog sds it worked great." Read more

    3 customers mention3 positive0 negative

    Customers are satisfied with the appearance of the drill bit. They mention that the carbide looks fine, the design is excellent, and that the bit still looks new.

    "...Excellent quality and design.I choose this product because I wanted the type that has a hex head bolt to secure the pilot drill bit...." Read more

    "...It did the job I needed it for, and the carbide looks fine. I don't doubt that it will last quite a while...." Read more

    "...an hour to drill but in the end I've got a 2 inch hole and the bit still looks new. Used my 1/2 inch variable drill...." Read more

    30 customers mention20 positive10 negative

    Customers are mixed about the quality of the drill bits. Some mention it's excellent, reliable, and durable for the price, while others say it'll not stay locked in and won't drill through concrete.

    "I was amazed at how quickly these chew into concrete. Excellent quality and design...." Read more

    "...It makes drilling with this nearly impossible.The bits also get stuck on the arbor. Even with oil on the threads...." Read more

    "Very good, work nice." Read more

    "...But overall it does drill a good hole" Read more

    10 customers mention0 positive10 negative

    Customers are dissatisfied with the durability of the drill bits. They mention that the pilot drill falls off, the bits break immediately, and the grinding tips break on first use. They also say that the drill is heavy and not durable.

    "The pilot drill wont stay in no matter how hard you tighten the screw.It makes drilling with this nearly impossible...." Read more

    "I got through one concrete brick, 5 inches. The pilot drill falls off no matter how hard or what tool you use to clamp...." Read more

    "...bit can hit the side of the hole and throws it off center and bent the bolt. Going to get a hex screw so it won't hit the side next time." Read more

    "...loosens as you drill and doesn’t stay tight resulting in the pilot bit dropping out and losing it in the hole...." Read more

    8 customers mention0 positive8 negative

    Customers are dissatisfied with the tightness of the drill bits. They mention that the Allen screw loosens as they drill, resulting in the pilot bit dropping out. The set screw has to be tightened often or you'll lose the drill bit. Some say that the center bit loosened the first time they used it.

    "...The pilot bit quickly loosens and the bit and the bolt can drop out in unfriendly places...." Read more

    "...Center bit loosened the first time I used it(first hole), but after snugging it again, it has done over a dozen more with no issue...." Read more

    "...The only problem is the set screw has to be tightened often or you'll lose the drill bit." Read more

    "Allen screw loosens as you drill and doesn’t stay tight resulting in the pilot bit dropping out and losing it in the hole...." Read more

    Not Impressed.
    1 Star
    Not Impressed.
    I purchased this product and received it yesterday 2/7/2020. It looked durable for the price. used it 2/8/20 to drill (2) holes thru brick and concrete block. First it came with a MG-1.0 Metric bolt that does not clear the hole that you are drilling (why not a set screw that recesses. The bolt vibrates loose after a couple of revolutions. It came with 3 arbor bits. I quickly found out why. The arbor bit along with the set bolt were lost in the concrete brick. This could be a good economic product if the shaft and arbor portion goes back to the drawing board. For now I would not recommend this product.
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    Top reviews from the United States

    ricardo hill
    5.0 out of 5 stars Amazingly fast
    Reviewed in the United States on February 19, 2024
    Verified Purchase
    I was amazed at how quickly these chew into concrete. Excellent quality and design.
    I choose this product because I wanted the type that has a hex head bolt to secure the pilot drill bit. The pilot bit quickly loosens and the bit and the bolt can drop out in unfriendly places. This could be expected with any brand with the easy solution being electrical tape. Tighten down the hex bolt and put several wraps of black electrical tape over it to prevent any problems. Happy drilling!
    Helpful
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    Manuel vega
    5.0 out of 5 stars Very good, work nice
    Reviewed in the United States on August 2, 2023
    Verified Purchase
    Very good, work nice.
    Helpful
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    Robert Ogletree
    4.0 out of 5 stars Works great for the money.
    Reviewed in the United States on April 2, 2021
    Verified Purchase
    Very surprised and pleased, at how well this concrete hole saw worked! First, I drilled through approximately 9 inches of brick on my 1909 home. Cut. Like. Butter! You have to break the "bore hole" out of the wall when you bottom out, but done easily with a large screwdriver. Next drilled through poured concrete (4") in about 5 minutes. I only used the 2" cutter, but it worked better than anticipated considering the low cost.
    Helpful
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    TiefeSchwartz
    5.0 out of 5 stars GREAT for drilling brick!
    Reviewed in the United States on October 28, 2023
    Verified Purchase
    Found a video on the internet demonstrating these amazon hole saws. Bought them and they are as advertised. Found with steady light pressure feeling the cutting of the brick actually was faster drilling than putting a ton of back pressure on the hole saw. I used an electric hammer drill to do the "dirty" work. Caution though, you can wipe out a hole saw if you use too much back pressure. The next hole takes twice as long to drill.
    Helpful
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    Amazon Customer
    5.0 out of 5 stars Cuts
    Reviewed in the United States on October 7, 2023
    Verified Purchase
    Cut the desired hole through one layer of brick. Suggest to use spray bottle of water to keep brick and hole saw cool. Use pilot hole. A must.
    Helpful
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    John D
    3.0 out of 5 stars 60mm version verses cured concrete a real chore, needed repeated sharpening
    Reviewed in the United States on February 17, 2021
    Verified Purchase
    I've revised this from one to three stars (WAS) Have only used the largest (60mm) of the set on cold concrete in cold temperatures with normal forces. After gaining about 1-inch of depth jumping between 3 started holes the cutting edges are spent.....expected much better life and cutting action based upon reviews....did not meet realistic needs. NOW: I've been able to dress tools edges with a diamond drum using a Dremel. After about four sharping's holes are drilled.....I bump for durability as with sharpening it completed the job and still has life.
    One person found this helpful
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    JW
    5.0 out of 5 stars Good value
    Reviewed in the United States on October 4, 2020
    Verified Purchase
    I was skeptical about the tool being what they claimed it to be. I was pleasantly surprised. All I needed to do was cut a 40mm hole in a stucco wall so I wasn't looking to spend a lot of money on a hole saw I may only use once, but I'm also a tool nut, so I went ahead and bought it. The brazing on the cutter heads are well done (I'm a welder so I do know what I'm talking about) and the shaft fits a Bosch rotary hammer drill. I'm very pleased and now I can lend it to friends knowing it's not going to fall apart on them.
    4 people found this helpful
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    Tla
    4.0 out of 5 stars Did the job
    Reviewed in the United States on February 21, 2024
    Verified Purchase
    Did the job
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