Drilax 3 Inch Masonry Diamond Hole Saw Heavy Duty Dry Core for Concrete Hole Saw Bit Brick, Cinder Block Drill Guide Included Extra Long Depth of Cut

Worked great

I bought this hole saw because I wanted to place an AC vent through the cinder block of my garage. This saw cut through the cinder block with NO problem. I was actually surprised to see how easy it was. I did buy an extension with this so I could cut both the inner and outer sides of the cinder block.I was also very happy with the company. At first I purchased the 4 inch which was too small. The company accepted the exchange with no problem. I purchased the second one and as I said it worked flawlessly. Good product and good company.

good

Worked as planned and needed, not sure how many more times it will work due to wear

Bought for installing a mini split in my garage. It's a block building. The hole saw had no problem drilling through the cinder block. Well worth the money

First of all, it is impossible to stabilize it on a surface. However, I managed it by making a same-sized hole in a piece of wood to guide it through. After cutting about half an inch, it got stuck, and when I took it out, I noticed a few of the teeth were broken.

Works perfect for drilling marble, concrete and cinder block. I have purchased 3 different sizes all this same brand, and every one works great!

It did the job putting two holes into a cement block, but it got hung up and the top actually bent where the stem is attached. I guess my drill is tougher than the drill. Keeping it wet is important for it to perform well.

El vástago de la broca no tiene la misma resistencia que la broca en sí, o la soldadura con la cual esta conectada a la broca le falta calidad. Se deformo al penetrar en concreto lo que ocasiona que su giro de penetración no sea perpendicular a la superficie a trabajar