Mellow Touch Watercolor Resale Brush is the perfect amount of wool blend to enhance the pliability and paint content, especially demanding for watercolors. The matching bristles unique to resable raw hair, good content, and a mellow touch can be used as a watercolor brush. 3100R Resable Round Brush: A brush with good paint content and effective stroke on the tip of the head. For watercolor, acrylic paintings, reseable, wool round (round brush) 3100R series / brush length x width (mm) 00/6x1.9 0/7x2.2 2/12x2.8 4/15x3.6 6/17x4.2 8/22x5.5 10 5 x 6.5 No. 12 / 17 x 3.5 / 14 / 29 x 8.2 / 16 / 30 x 9.4 / 18 / 32 x 9.8 / 20 / 34 x 10.3 / 22 / 37 x 11.3 / 26 x 413.5 / 30