20 Pcs Multitool Diamond Blade for Grout

I would buy these again . Cut through 1940's thick plaster walls and wall board excellent . I made a bunch of cuts before and as I demo'd to control how the edges broke . These blades held up and lasted very well in my opinion . Type of blade is nice to have on hand and doesn't cost much if you have to give one away to a coworker . I was using a vacuum for dust control , so maybe that did help to keep the blade cool , not sure .