Wooster Brush R227-4 Mini-Koter Frame Mohair Blend, 1/4-Inch Nap, 2-Pack, 4-Inch White shed-resistant fabric combines natural mohair with non-matting polyester for a very smooth finish Use with enamels, varnishes, and polyurethanes Closed end saves time when painting corners Metric core size; use with the R012 Mini-Koter 4 inch roller frame