The Escoda Series 2410 Optimo Brushes are made from a custom blend using only the best male and female kolinsky hair. A perfect choice for watercolor, oil and acrylic artists, these brushes retain a perfect point after much use and have exceptional color retention & spring. Escoda brushes continue to be made by hand by the Escoda family as they were since 1933. This is a short handle size 2/0 round brush with bristles measuring a diameter of 0. 80mm and length of 7mm.