The blade worked great in the corners. It fell apart in-between the floor tiles. The carbide flakes started peeling / falling off a good 30minutes into its use.
It was clear in the first 5 minutes that the hybrid blade was not going to "cut it" long term. The construction of the hybrid is weak. There is a big difference in the effectiveness of removing the grout between the hybrid and the "grout removal" blade.
Compare both and you'll notice the layers of carbide on the hybrid is very light...no wonder that bare metal was starting to show. I attached a photo of it.
I returned it to HD for a refund. I took the refund and bought another. Yes I did. I need it for my second bathroom makeover. Ill keep it for the 90 only.
Pros: Easy to Use, Accurate
Cons: Not Durable, Not Sturdy, not strong, weak construction