This fluted silicon carbide rub brick makes dressing down concrete fast and easy. The fluted brick is on a diagonal, which provides sharp edges to help with stubborn materials while carrying away the excess debris. Attached to a contoured plastic handle to minimize fatigue. Preferred by finishers for its ease of use. The 1″ thick 20 grit rub brick smooths out concrete to a fine finish. A popular tool to create a smooth professional finish on block walls, wet tile, and concrete, especially excess cement from forms. The favorite tool for decorative concrete prep and applications. Proudly made in the USA.