Which multitool blade for brick and mortar sugery?

[epsilonGreedy]

I need to comp into a small section of masonry wall for a local repair, actually a few locations. Nothing more than 1ft across.

 

My options seem to be blades that look like a wide multitool plunge blade and the other option is a semi circular blade. Which multi tool blade should I choose?

 

In ascending order of harness I need to cut into and remove bits of the following:

• Fibolite (clay bubbles) internal wall block.
• Mortar.
• Regular clay bricks.
• Denser coursing concrete bricks.

 

Looking at these:

https://www.toolstation.com/smart-multi-cutter-mortar-buster-blade/p46597

 

https://www.amazon.co.uk/Bosch-Starlock-Carbide-Riff-Remover-Multi-Tools/dp/B009TGOMJ6

 

[Nick Laslett]

I find the Bosch Professional website a good way to narrow down which blade type can do what. 
 

https://www.bosch-professional.com/gb/en/multitool-accessories-2865193-ocs-ac/

 

Use the filter button to select the material type. 
 

This works for all the different tool blades, grinder, circular saw, drill, etc. 

[Mr Punter]

A grinder will be better.  You won't cut brick and concrete with a multitool.