First one got duller quicker than I thought.
Used a little water to cool the blade the second one and had no issues. Very happily with the results.

This is a very strong blade. You can tell right away as soon as you take it out of the package. I actually did not know that they make these for a reciprocating saw. I got lucky that it popped up in the search results. I have used this blade to cut up patio bricks and it has held up very well. The cuts are clean and the bricks did not crumble out. This was much more convenient for me than using a conventional diamond circular saw blade. I prefer recip saws over circular saws (when possible), much easier to work with.

Blades worked very well. Used them to cut through 4 cement blocks. Used one blade on all 4 and blade is still sharp. Not sure how often you would need to change blades if you needed to cut through a lot of blocks.

Until a few days ago I never knew such a blade type existed. This is an amazing tool at a good price. It cuts through mortar joints with ease but I have to say my bricks were tougher than woodpecker lips. They lost in the end but they took the life out of my blade. I had used a carbide abrasive blade first, it just did not have it. This blade made my job much easier, it lasted long enough to get through my one job. I gave it five stars simply because it was tough enough to actually cut mortar and brick. I could be dissatisfied with the blade and give it a low rating but when you are dealing with masonry you are into MAXIMUM HARD and not many materials are tough enough to really work. Buy one, you will be pleasantly surprised. Written by Deborah's dad.

Save yourself lots of time and headaches. Use a mason bit and hammer drill to clear a slot for this blade and it will slice through your brick and mortar very well. I was amazed. I removed a half a brick on my exterior to install ventilation port. Did it twice. These blades are amazing. Bought two, thinking one would wear fast, but didn't have to use the second one. Very pleased!