The Escoda Series 4075 Modernist Brushes are made from a custom blend of patterned synthetic fibers containing all the attributes of natural Mongoose hair. This blend imitates its natural appearance and feel, offers good spring and an immediate response to the brushstroke. A perfect choice for the professional or seasoned oil and acrylic artist. Escoda brushes continue to be made by hand by the Escoda family as they were since 1933. This is a long handle size 1 round brush with bristles measuring a diameter of 1. 43mm and length of 10mm.