Fein multi tool

From the Manufacturer This Fein 63502118016 blade is for removing grout from standard 5/64-inch gaps and larger. The action of swinging the tool vibrates the grout without damaging the tiles on both sides of the mortar. The coating on the carbide blade allows for quick removal of mortar between the tiles. The cleavage removes a card at a time, as well as grout removal against a wall without damaging the wall. Segmented carbide grout blade has a cutting width of 5 64 "1 and 2" deep. The blade quickly removes grout around broken or damaged tiles for the replacement of tiles easy. The grout blade is also for removing old mortar used and colorful.