Review on 🧱 Cinderblock Concrete Masonry Material by COMOWARE by Quinton Wonsley

I bought these with two projects in mind. First, I drilled 1/8" pilot holes in the plaster of my house for some wire clamps. Second, drilling holes in the cinder block for small anchors. The two attached pictures show a new drill bit and the same drill bit after drilling a hole in the plaster . This is the second 1/8" I've used. After the same thing happened to the first one I wanted to see if it was a manufacturing defect or if the bits were that brittle. Turns out they were so brittle. I was able to drill out about 3 holes on a bit before they get too dull to continue (Medium/High Speed Ryobi Hammer Drill) ! I may have come across a poor quality batch and it is possible that they are suitable for other specified materials. But I would avoid them if you plan to use them on concrete.