Coarse bricks with sturdy handle for easier use. For rubbing down concrete and overhead floor and wall work. Fluted for fast cutting silicon carbide. For rubbing down concrete and overhead floor and wall work. Fluted for fast cutting silicon carbide. 8" X 3", rubbing brick, 20 grit brick used for smoothing corners & edges after removal of forms. Excellent for industrial and Domestic use. Used for dressing down concrete and removing marks. Product is manufactured in United states.