Wooster Brush R221-6-1/2 Mini-Koter Frame Mohair Blend, 1/4-Inch Nap, 2-Pack, 6-1/2-Inch White shed-resistant fabric combines natural mohair with non-matting polyester for a very smooth finish Use with enamels, varnishes, and polyurethanes Use with any 6 1/2 inch size Mini-Koter frame