Judging by the photos. I used a nozzle to wipe adhesive off a 1.5 x 2.5 foot section of a concrete floor in a bathroom. . A bit removed all leftovers. The chisel worked very well. After work, for example, it was 75% worn out. It's time to replace the racquet, but I'll use it a little more. hp I didn't want the dust to end up all over the house. For this reason, this bit was used near the entrance. For the rest of the floor I used an angle grinder.