Kraft Tool Co.® CF283 6" x 3" x 1" 20 Grit Rub Brick with Handle is a fluted silicon carbide rub brick that 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.