After removing the ceramic tile from the kitchen, we struggled to find a way to remove the large amount of flimsy mass that was left on our concrete. We tried various methods but they were all ineffective and would require several days of work. Bought this expensive jackhammer bit hoping it was worth it and it definitely is. Removes all subtleties in a couple of hours. Definitely worth it. Used with Harbor Freight's SDS Max Bauer jackhammer.